CN210829721U

CN210829721U - Oil circuit structure and scroll compressor

Info

Publication number: CN210829721U
Application number: CN201921796762.1U
Authority: CN
Inventors: 胡余生; 魏会军; 单彩侠; 方琪; 赵豪川
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai; Zhuhai Gree Energy Saving Environmental Protection Refrigeration Technology Research Center Co Ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-06-23
Anticipated expiration: 2029-10-24

Abstract

The utility model provides an oil circuit structure and scroll compressor, include: the back pressure cavity is arranged between the movable scroll plate and the support structure; the motor assembly is arranged in the cavity and is provided with an oil storage area; the support structure is provided with a first oil guide channel, the first oil guide channel is communicated with the oil storage area and the back pressure cavity, and the first oil guide channel is used for guiding oil in the oil storage area into the back pressure cavity. The oil circuit structure and the scroll compressor of the utility model have the advantages that the dynamic and static scroll disks and the bearing pieces can realize oil film lubrication, the friction power consumption is reduced, and the reliability of the compressor is improved; the oil guide channel is simple in structure, high-pressure and low-pressure throttling is not needed, and the risk of high-pressure and low-pressure leakage is avoided. The oil path channel and the gas path are relatively separated, so that the oil discharge rate of the compressor can be reduced, and the heat exchange effect of the system is improved; the circulating oil way is formed, the recycling of lubricating oil in the compressor can be better promoted, the part processing and design are simplified, the process is simple, and the safety and the reliability are realized.

Description

Oil circuit structure and scroll compressor

Technical Field

The utility model belongs to the technical field of the compressor, concretely relates to oil circuit structure and scroll compressor.

Background

The electric vortex compressor for automobile air conditioner is horizontal structure, and the motor, the shaft system and the pump body inside the compressor are installed transversely. The disadvantage of the horizontal compressor is that there is no stable lubricant oil sump inside the compressor, compared to the conventional vertical compressor. The recycling of the refrigeration oil and the lubrication difficulty of the bearing are great.

As shown in FIG. 1, in the prior art oil path structure, an oil guiding passage structure 4 ' is respectively formed on a movable disk 1 ', a stationary disk 2 ' and a bracket 3 ', a back pressure cavity 5 ' is communicated with an exhaust high-pressure oil area 6 ', a follow-up disk 1 ' runs for a circle, the oil guiding passage structure 4 ' is conducted once, and high-pressure oil is intermittently guided to the back pressure cavity 5 ' to lubricate a bearing. In the scheme, the high-pressure oil is led to the back pressure cavity by utilizing the pressure difference to lubricate the bearings on the bracket 3 'and the movable disc 1'.

However, this solution requires a certain amount of lubricant oil to be stored in the high-pressure region, which causes a problem of a large oil discharge rate of the compressor. On the other hand, impurities generated by abrasion of the pump body in the high-pressure oil area can enter the back pressure cavity 5 'through the oil guide channel structure 4', and the impurities can block the oil guide channel, so that lubrication of the support 3 ', the movable disc 1' and the like is influenced, and abnormal abrasion is generated.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model is that oil circuit structure leads to the compressor oil extraction rate big, and impurity gets into and causes the bearing to damage to an oil circuit structure and scroll compressor are provided.

In order to solve the above problem, the utility model provides an oil circuit structure, include:

the back pressure cavity is arranged between the movable scroll plate and the support structure;

the motor assembly is arranged in the cavity and is provided with an oil storage area;

the support structure is provided with a first oil guide channel, the first oil guide channel is communicated with the oil storage area and the back pressure cavity, and the first oil guide channel is used for guiding oil in the oil storage area into the back pressure cavity.

The purpose of the utility model and the technical problem thereof can be further realized by adopting the following technical measures.

Preferably, oil circuit structure still includes bent axle spare, and bent axle spare rotates with to move the vortex dish and is connected, and bent axle spare is equipped with movable disk bearing with moving vortex dish junction, and movable disk bearing installs in first bearing chamber, and first bearing chamber communicates with each other with the backpressure chamber, and fluid in the backpressure intracavity can lubricate movable disk bearing.

Preferably, the first oil guide channel is opened along the radial direction of the support structure.

Preferably, the first oil guiding channel comprises an oil suction pipe, the oil suction pipe is connected to a port of the first oil guiding channel, which is located in the oil storage area, and the oil suction pipe extends to the bottom oil in the oil storage area.

Preferably, the oil circuit structure still includes bent axle spare, and bent axle spare rotates with supporting structure and is connected, and bent axle spare and supporting structure junction are equipped with the support bearing, and the support bearing is installed at the second bearing chamber, and the second bearing chamber communicates with each other with the backpressure chamber, and fluid in the backpressure intracavity can lubricate the support bearing.

Preferably, the bracket structure is provided with a second oil guide channel, and the second oil guide channel is communicated with the second bearing chamber and the back pressure cavity.

Preferably, the second oil guide channel is opened along the axial direction of the support structure.

Preferably, the other end of bent axle spare is connected to the drain pan spare of compressor, is equipped with third bearing chamber on the drain pan spare, and the indoor drain pan bearing that installs of third bearing is equipped with the eccentric orfice in the bent axle spare, and eccentric orfice intercommunication backpressure chamber and third bearing chamber, the fluid accessible eccentric orfice in the backpressure intracavity get into third bearing chamber, lubricate the drain pan bearing.

Preferably, at least one oil guide plate is installed in the eccentric hole.

Preferably, an oil guide plate is arranged at one end of the eccentric hole close to the back pressure cavity, and/or an oil guide plate is arranged at one end of the eccentric hole close to the third bearing chamber.

Preferably, the third bearing chamber is internally provided with an oil pump structure, the oil pump structure is communicated with the eccentric hole, and oil in the backpressure cavity can be sucked into the third bearing chamber through the eccentric hole of the oil pump structure.

Preferably, the third bearing chamber communicates with the oil reservoir region through a fourth oil introduction passage provided in the bottom case member.

Preferably, the oil path structure further comprises a sealing device for sealing oil in the orbiting scroll.

Preferably, the sealing device is arranged on a contact surface of the fixed scroll plate and the cover of the compressor, and the sealing device comprises a refrigerant sealing element and an oil sealing element.

The scroll compressor adopts the oil circuit structure.

The utility model provides an oil circuit structure and scroll compressor have following beneficial effect at least:

the oil circuit structure and the scroll compressor of the utility model have the advantages that the dynamic and static scroll disks and the bearing pieces can realize oil film lubrication, the friction power consumption is reduced, and the reliability of the compressor is improved; the oil guide channel is simple in structure, high-pressure and low-pressure throttling is not needed, and the risk of high-pressure and low-pressure leakage is avoided. The oil path channel and the gas path are relatively separated, so that the oil discharge rate of the compressor can be reduced, and the heat exchange effect of the system is improved; the circulating oil way is formed, the recycling of lubricating oil in the compressor can be better promoted, the part processing and design are simplified, the process is simple, and the safety and the reliability are realized.

Drawings

FIG. 1 is a schematic diagram of a prior art oil circuit configuration;

fig. 2 is a schematic diagram of an oil path structure according to an embodiment of the present invention;

fig. 3 is a schematic view of a support structure according to an embodiment of the present invention;

fig. 4 is a schematic structural view of an oil suction pipe according to an embodiment of the present invention;

fig. 5 is a schematic structural view of an oil pump according to an embodiment of the present invention.

The reference numerals are represented as:

1', a movable disc; 2', a static disc; 3', a bracket; 4', an oil guide channel structure; 5', a back pressure chamber; 6' and a high-pressure oil area.

1. A movable scroll; 2. a scaffold structure; 3. a back pressure chamber; 4. a motor assembly; 5. an oil storage region; 6. a first oil guide channel; 7. a crankshaft piece; 8. a movable disc bearing; 9. a first bearing chamber; 10. an oil suction pipe; 11. a bracket bearing; 12. a second bearing chamber; 13. a second oil guide channel; 14. a bottom housing member; 15. a third bearing chamber; 16. a bottom shell bearing; 17. an eccentric hole; 18. an oil guide sheet; 19. an oil pump structure; 20. a refrigerant sealing member; 21. an oil seal; 22. a fixed scroll; 23. a machine cover; 24. and a fourth oil guide channel.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

With reference to fig. 1 to 5, an embodiment of the present invention provides an oil circuit structure, including: the device comprises a movable scroll 1 and a support structure 2, wherein a back pressure cavity 3 is arranged between the movable scroll 1 and the support structure 2; the motor component 4 is arranged, and an oil storage area 5 is arranged in a cavity where the motor component 4 is located; be equipped with first oil channel 6 of drawing on the supporting structure 2, first oil channel 6 intercommunication oil storage area 5 and backpressure chamber 3 of drawing, first oil channel 6 of drawing is used for leading into backpressure chamber 3 with the fluid in the oil storage area 5.

The oil circuit structure of this embodiment changes the technical scheme that the oil was drawn from high-pressure oil district to the back pressure chamber among the original oil circuit structure, and with the oil storage area 5 and the 3 direct intercommunications in back pressure chamber of motor element 4 department, high-pressure exhaust passageway is avoided to the oil circuit structure, can effectively reduce the oil extraction rate of compressor, improves the working property of compressor, improves system's heat transfer effect. Meanwhile, impurities of friction loss of the movable and static scrolls are prevented from entering the back pressure cavity 3, normal operation of the bearing piece and the movable scroll 1 is influenced, and the wear rate of equipment is reduced.

The interior of the compressor can be set into three different pressure areas through different sealing parts, the cavity in the bottom shell 14 for accommodating the motor assembly 4 is a low-pressure area Ps, a middle-pressure area Pm where the back-pressure cavity 3 is located and a high-pressure area Pd where the exhaust port of the fixed scroll 22 is located, and the cavity is sealed with the bottom shell 14 through a cover 23 so as to ensure that the low-pressure area Ps, the middle-pressure area Pm and the high-pressure area Pd are respectively independent spaces. The presence of impurities can adversely affect bearing lubrication due to the possible presence of impurities in the high pressure zone Pd resulting from pump wear. Therefore, the high voltage region Ps needs to be separated from the medium voltage region Pm and the low voltage region Ps. The liquid lubricating oil circulates only in the middle pressure area Pm and the low pressure area Ps and is isolated from the high pressure area Pd, so that the oil discharge rate of the compressor is reduced as much as possible, and impurities are prevented from entering.

In this embodiment, oil circuit structure still includes bent axle spare 7, bent axle spare 7 with move vortex dish 1 and rotate and be connected, bent axle spare 7 with move vortex dish 1 junction and be equipped with movable disk bearing 8, movable disk bearing 8 installs in first bearing chamber 9, first bearing chamber 9 communicates with each other with backpressure chamber 3, fluid in the backpressure chamber 3 can lubricate movable disk bearing 8.

The utility model discloses horizontal compressor to, main lubricated position mainly includes sound whirlpool dish and bearing spare, this embodiment introduces backpressure chamber 3 with the fluid in the oil storage area 5, backpressure chamber 3 with move 1 direct contact of whirlpool dish, fluid in the backpressure chamber 3 is along moving the gap of whirlpool dish 1 with mounting structure 2, follow-up whirlpool dish 1's rotation, lubricating oil can reach most marginal region, move the edge of whirlpool dish 1 promptly, this department moves the contact surface and the driving disk bearing 8 of the side of whirlpool dish 1 with mounting structure 2 and static whirlpool dish 22 and lubricate, make sound whirlpool dish contact surface lubrication effect good.

In this embodiment, in the horizontal scroll compressor, the fluid in the oil storage area 5 is concentrated in the bottom of the radial bottom shell spare 14 of compressor, and first oil channel 6 of drawing is seted up along the radial of mounting structure 2, guarantees that first oil channel 6 of drawing can lead to oil storage area 5, can also shorten first distance of drawing oil channel 6, draws oil channel simple structure, workable.

In this embodiment, in order to improve the oil absorption effect of the first oil guiding channel 6, the first oil guiding channel 6 includes an oil suction pipe 10, the oil suction pipe 10 is connected to a port of the first oil guiding channel 6, the port is located in the oil storage area 5, the oil suction pipe 10 extends to the bottom oil in the oil storage area 5, and the first oil guiding channel 6 can suck the bottom oil through the oil suction pipe 10, and especially, under the condition that the oil in the oil storage area 5 is insufficient, the lubrication effect of the compressor is satisfied.

In this embodiment, the oil circuit structure still includes bent axle spare 7, and bent axle spare 7 rotates with supporting structure 2 to be connected, and bent axle spare 7 is equipped with support bearing 11 with supporting structure 2 junction, and support bearing 11 installs in second bearing chamber 12, and second bearing chamber 12 communicates with each other with backpressure chamber 3, and the fluid in backpressure chamber 3 can lubricate support bearing 11. Because the assembly demand, second bearing room 12 does not communicate with back pressure chamber 3 among the prior art, consequently, this embodiment has seted up the second on mounting structure 2 and has led oil passageway 13, and second oil passageway 13 communicates second bearing room 12 with back pressure chamber 3. The second oil guide passage 13 is opened in the axial direction of the carrier structure 2, and the second oil guide passage 13 can guide the oil in the back pressure chamber 3 into the second bearing chamber 12.

In this embodiment, the other end of the crankshaft 7 is connected to a bottom shell 14 of the compressor, a third bearing chamber 15 is provided on the bottom shell 14, and a bottom shell bearing 16 is installed in the third bearing chamber 15. In the prior art, the bottom shell bearing 16 is lubricated only by oil mist carried in a suction refrigerant, and particularly, the lubrication of the bottom shell bearing 16 is poorer when the bottom shell bearing is operated at a high speed. Therefore, an eccentric hole 17 is formed in the crankshaft 7, the eccentric hole 17 communicates the back pressure chamber 3 with the third bearing chamber 15, at least one oil guide piece 18 is installed in the eccentric hole 17, and oil in the back pressure chamber 3 can enter the third bearing chamber 15 through the eccentric hole 17 to lubricate the bottom shell bearing 16. The oil guiding plate 18 is preferably in the shape of a plate spiral, and the oil guiding plate 18 is made into a spiral plate in the direction opposite to the rotation direction of the compressor crank member 7. The oil guide plate 18 generates a passive suction force along with the rotation of the crank member 7, and sucks the oil from the back pressure chamber 3 and discharges the oil to the third bearing chamber 15. The oil reaches the third bearing chamber 15, partly to assist in lubricating the bottom shell bearing 16 and partly to return to the oil reservoir 5.

Thus, the oil path structure of the present embodiment can form a complete circulation oil path: oil in the oil storage area 5 enters the back pressure cavity 3 through the first oil guide channel 6 to finish the lubrication of the dynamic and static scroll disc and the dynamic disc bearing, and is divided into two paths, wherein the first path reaches the second bearing chamber 12 through the second oil guide channel 13 to finish the lubrication of the bracket bearing 11; the second path reaches the third bearing chamber 15 via the eccentric bore 17, completes the lubrication of the bottom shell bearing 16 and finally flows back to the oil reservoir 5. The circulation can solve the problem of poor lubrication of the bottom shell bearing 16 and the problem that the reliability of the compressor is affected by impurities generated by friction of the moving and static disks.

In this embodiment, the installation position of the oil guiding sheet 18 has a certain influence on the oil guiding performance, the oil guiding sheet 18 is arranged at one end of the eccentric hole 17 close to the back pressure cavity 3, and/or the oil guiding sheet 18 is arranged at one end of the eccentric hole 17 close to the third bearing chamber 15, and the oil guiding sheet 18 is closer to the upstream of the oil flowing direction, so that the oil guiding effect is better.

In this embodiment, for the circulation efficiency who improves fluid circulation circuit, be equipped with oil pump structure 19 in third bearing chamber 15, oil pump structure 19 and eccentric orfice 17 intercommunication, oil pump structure 19 accessible eccentric orfice 17 inhale to third bearing chamber 15 with the interior fluid of backpressure chamber 3. The oil pump structure 19 is used for replacing the oil guide sheet 18, so that the oil circulation efficiency can be improved, and the lubricating effect can be improved.

In this embodiment, the third bearing chamber 15 communicates with the oil reservoir region 5 through a fourth oil introducing passage 24, and the fourth oil introducing passage 24 is provided in the bottom case member 14.

In this embodiment, the oil path structure further includes a sealing device, and the sealing device is used for sealing oil in the movable scroll 1. Sealing device sets up on the contact surface of compressor fixed scroll 22 and cover 23, the installation of being convenient for, and sealing device includes refrigerant sealing member 20, fluid sealing member 21, and refrigerant sealing member 20 is used for preventing the high-temperature high-pressure refrigerant of high-pressure district Pd from scurrying in disorder, and fluid sealing member 21 is used for preventing the fluid in the compressor to get into high-pressure district Pd, increases compressor oil extraction rate.

According to the oil circuit structure, the dynamic and static scrolls and the bearing piece can realize oil film lubrication, so that the friction power consumption is reduced, and the reliability of the compressor is improved; the oil guide channel is simple in structure, high-pressure and low-pressure throttling is not needed, and the risk of high-pressure and low-pressure leakage is avoided. The oil path channel and the gas path are relatively separated, so that the oil discharge rate of the compressor can be reduced, and the heat exchange effect of the system is improved; the circulating oil way is formed, the recycling of lubricating oil in the compressor can be better promoted, the part processing and design are simplified, the process is simple, and the safety and the reliability are realized.

The scroll compressor adopts the oil circuit structure.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. An oil passage structure, characterized by comprising:

the vortex generator comprises a movable vortex disc (1) and a support structure (2), wherein a back pressure cavity (3) is arranged between the movable vortex disc (1) and the support structure (2);

the motor assembly (4), the cavity where the motor assembly (4) is located is provided with an oil storage area (5);

be equipped with on supporting structure (2) first oil passageway (6) of drawing, first oil passageway (6) intercommunication of drawing oil storage district (5) with backpressure chamber (3), first oil passageway (6) of drawing be used for with fluid in oil storage district (5) is introduced backpressure chamber (3).

2. The oil circuit structure according to claim 1, characterized in that the oil circuit structure further comprises a crankshaft member (7), the crankshaft member (7) is rotatably connected with the movable scroll (1), a movable disc bearing (8) is arranged at the joint of the crankshaft member (7) and the movable scroll (1), the movable disc bearing (8) is installed in a first bearing chamber (9), the first bearing chamber (9) is communicated with the back pressure chamber (3), and oil in the back pressure chamber (3) can lubricate the movable disc bearing (8).

3. The oil circuit arrangement according to claim 2, characterized in that the first oil guide channel (6) opens in the radial direction of the carrier structure (2).

4. The oil circuit arrangement according to claim 2, characterized in that the first oil lead-through channel (6) comprises an oil suction pipe (10), the oil suction pipe (10) being connected to a port of the first oil lead-through channel (6) at the oil reservoir area (5), the oil suction pipe (10) extending to the ground oil of the oil reservoir area (5).

5. The oil circuit structure according to claim 1, characterized in that the oil circuit structure further comprises a crankshaft member (7), the crankshaft member (7) is rotatably connected with the support structure (2), a support bearing (11) is arranged at the joint of the crankshaft member (7) and the support structure (2), the support bearing (11) is installed in a second bearing chamber (12), the second bearing chamber (12) is communicated with the back pressure chamber (3), and oil in the back pressure chamber (3) can lubricate the support bearing (11).

6. The oil circuit structure according to claim 5, characterized in that a second oil guiding channel (13) is formed in the support structure (2), and the second oil guiding channel (13) is communicated with the second bearing chamber (12) and the back pressure cavity (3).

7. The oil circuit arrangement according to claim 6, characterized in that the second oil guide channel (13) opens in the axial direction of the carrier structure (2).

8. The oil circuit structure according to any one of claims 2 to 7, wherein the other end of the crankshaft (7) is connected to a bottom shell member (14) of the compressor, a third bearing chamber (15) is arranged on the bottom shell member (14), a bottom shell bearing (16) is installed in the third bearing chamber (15), an eccentric hole (17) is formed in the crankshaft (7), the eccentric hole (17) is communicated with the back pressure chamber (3) and the third bearing chamber (15), and oil in the back pressure chamber (3) can enter the third bearing chamber (15) through the eccentric hole (17) to lubricate the bottom shell bearing (16).

9. The oil circuit structure according to claim 8, characterized in that at least one oil guide piece (18) is installed in the eccentric hole (17).

10. The oil circuit arrangement according to claim 9, characterized in that the oil guide vane (18) is provided at an end of the eccentric bore (17) close to the back pressure chamber (3) and/or that the oil guide vane (18) is provided at an end of the eccentric bore (17) close to the third bearing chamber (15).

11. The oil circuit structure according to claim 8, characterized in that an oil pump structure (19) is provided in the third bearing chamber (15), the oil pump structure (19) is communicated with the eccentric hole (17), and the oil pump structure (19) can suck oil in the back pressure chamber (3) to the third bearing chamber (15) through the eccentric hole (17).

12. The oil circuit structure according to any one of claims 9 to 11, characterized in that the third bearing chamber (15) communicates with the oil reservoir region (5) through a fourth oil introducing passage (24), the fourth oil introducing passage (24) being provided in the bottom case member (14).

13. The oil circuit structure according to any one of claims 1 to 7 and 9 to 11, further comprising a sealing device for sealing oil in the orbiting scroll (1).

14. The oil circuit structure according to claim 13, wherein the sealing device is arranged on a contact surface between a fixed scroll (22) and a cover (23) of the compressor, and the sealing device comprises a refrigerant seal (20) and an oil seal (21).

15. A scroll compressor characterized by employing the oil passage structure according to any one of claims 1 to 14.