CN113202754A

CN113202754A - Full-sealed horizontal scroll compressor with exhaust oil filtering structure

Info

Publication number: CN113202754A
Application number: CN202110603883.5A
Authority: CN
Inventors: 汤熙华; 伍海浩; 李继泰; 尤慧馨
Original assignee: Hunan Maigu Technology Co ltd
Current assignee: Hunan Maigu Technology Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-08-03

Abstract

The invention discloses a fully-sealed horizontal scroll compressor with an exhaust oil filtering structure, which comprises a shell and a bearing support plate arranged at one end in the shell, wherein the bearing support plate and the shell form an exhaust cavity, the bottom of the exhaust cavity is provided with an oil pool, the shell is provided with an exhaust pipe which can be communicated with the exhaust cavity, the bearing support plate is provided with a gas channel, and the exhaust cavity is internally provided with an exhaust oil filtering structure for filtering lubricating oil from gas flowing into the exhaust pipe from the exhaust cavity. According to the invention, through the exhaust oil filtering structure, the oil return and lubrication of the compressor are improved, the service life of the compressor is prolonged, and the operation reliability of the compressor is improved.

Description

Full-sealed horizontal scroll compressor with exhaust oil filtering structure

Technical Field

The invention relates to the technical field of scroll compressors, in particular to a fully-sealed horizontal scroll compressor with an exhaust oil filtering structure.

Background

The scroll compressor is a compressor of compressible volume composed of a fixed scroll and an orbiting scroll. As shown in fig. 1 and 2, involute profiles of the fixed scroll and the movable scroll having the same parameter are different by 180 ° when they are installed and the movable scroll is engaged with the fixed scroll on a radius of rotation. In the working process of the compressor, the crankshaft drives the movable scroll disk to do circular translation motion around the fixed scroll disk: the air suction port is always communicated with the external space and is in an air suction state; the gas sucked in the vortex compression cavity is continuously compressed, and the pressure is increased; high-pressure gas enters a gas discharge high-pressure cavity in the shell of the compressor from a gas discharge hole in the center of the fixed scroll. Also, the above processes may be performed simultaneously during one revolution of the crankshaft, and thus it can be considered that the suction and discharge processes of the scroll compressor are continuous.

As the crankshaft rotates, compressed gas is continuously discharged from the scroll compression chamber into the discharge high pressure chamber. Because the compressed gas is in a high-temperature and high-pressure state, the surface of the oil pool is close to the lubricating oil of the compressed gas to foam, and the generated lubricating oil foam flows to the direction of the exhaust port along the airflow channel along with the compressed gas. In addition, the lubricating oil discharged from the lubricating system of the compressor is also foamed under the action of the compressed gas, and the generated lubricating oil foam also flows along the compressed gas to the direction of the exhaust port along the gas flow channel. When the compressor runs, under the action of the bearing support plate, the oil level of the oil pool in the exhaust cavity is higher than that in the exhaust high-pressure cavity. The lubricating oil in the exhaust cavity is foamed to generate foam under the action of the compressed gas, and the foam is closer to the exhaust pipe and is easier to be taken out of the compressor under the action of the gas flow. The lubricating oil foam can lead to the compressor lack of oil along with the exhaust discharge, under frequency conversion or other abominable operating modes, the mode of failure such as wearing and tearing, vibration noise increase, bent axle locking appear.

Disclosure of Invention

The invention aims to provide a fully-sealed horizontal scroll compressor with an exhaust oil filtering structure, which mainly solves the problems.

In order to achieve the purpose, the invention discloses a fully-sealed horizontal scroll compressor with an exhaust oil filtering structure, which comprises a shell and a bearing support plate arranged at one end in the shell, wherein the bearing support plate and the shell form an exhaust cavity, the bottom of the exhaust cavity is provided with an oil pool, the shell is provided with an exhaust pipe which can be communicated with the exhaust cavity, the bearing support plate is provided with a gas channel, and the exhaust cavity is internally provided with an exhaust oil filtering structure for filtering lubricating oil from gas flowing into the exhaust pipe from the exhaust cavity.

Furthermore, the exhaust oil filtering structure divides the exhaust cavity into a first air chamber, a second air chamber and a third air chamber which can be communicated, the oil pool is positioned at the lower side in the first air chamber, the exhaust pipe is connected with the third air chamber, the gas channel is connected with the second air chamber, and oil filtering holes communicated with the second air chamber and the third air chamber are arranged on the exhaust oil filtering structure.

Furthermore, the exhaust oil filtering structure comprises a separation plate and an oil filtering plate provided with the oil filtering hole, the separation plate is positioned above the first air chamber, and the part of the exhaust cavity above the first air chamber is separated into the second air chamber and the third air chamber by the oil filtering plate.

Furthermore, at least one side of the partition plate is provided with a gap for discharging oil to the oil pool.

Furthermore, the aperture of the oil filtering hole close to the gas channel on the oil filtering plate is smaller than that of the oil filtering hole far away from the gas channel.

Furthermore, the exhaust oil filtering structure further comprises a first connecting plate and a second connecting plate which are arranged on the same side of the partition plate, one end of the first connecting plate is connected with one end of the partition plate, the other end of the first connecting plate is connected with one end of the oil filtering plate, one end of the second connecting plate is connected with the other end of the partition plate, and connecting holes used for connecting the bearing support plate are formed in the first connecting plate and the second connecting plate.

Furthermore, the first connecting plate, the second connecting plate, the partition plate and the oil filter plate are of an integrated bending and forming structure.

Furthermore, one end of the partition plate close to the exhaust pipe is obliquely and downwards arranged towards the other end.

Furthermore, the other end of the oil filter plate abuts against the partition plate, and an oil passing groove is formed in the other end of the oil filter plate.

Compared with the prior art, the invention has the advantages that:

the invention effectively separates gas and lubricating oil through the exhaust oil filtering structure, so that the oil quantity discharged outside by the compressor is reduced, the circulation quantity of the lubricating oil in the refrigerating system is reduced, the reduction of the heat exchange efficiency of the heat exchanger caused by oil is avoided, and the refrigerating efficiency of the system is improved. Meanwhile, lubricating oil is kept to circulate only in the compressor, so that the oil circulation quantity of a lubricating system of the compressor is ensured, the compressor cannot break down due to oil shortage, and meanwhile, because all moving parts are effectively lubricated, the friction power consumption of the compressor is reduced, the efficiency is increased, the service life of the compressor is prolonged, and the running reliability of the compressor is improved.

The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic cross-sectional view of a fully enclosed horizontal scroll compressor with a gas and oil extraction configuration as disclosed in the prior art;

FIG. 2 is a schematic sectional view A-A of FIG. 1;

FIG. 3 is an isometric illustration of an exhaust oil filter construction disclosed in a preferred embodiment of the present invention;

FIG. 4 is a schematic view of the installation of the exhaust oil filter structure on the compressor as disclosed in the preferred embodiment of the present invention;

fig. 5 is a schematic sectional view B-B of fig. 4.

Illustration of the drawings:

1. a housing; 101. a pipe shell; 102. a front end enclosure; 103. sealing the end; 2. a bearing support plate; 21. a gas channel; 3. an exhaust chamber; 31. a first air chamber; 32. a second air chamber; 33. a third air chamber; 34. a gap; 4. an oil sump; 5. an exhaust pipe; 6. an exhaust oil filtering structure; 61. an oil filter hole; 62. a partition plate; 63. an oil filter plate; 64. a first connecting plate; 65. a second connecting plate; 66. connecting holes; 67. an oil passing groove; 7. a scroll assembly; 8. a frame; 9. a crankshaft; 10. a motor; 11. an oil pump; 12. and (4) screws.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in fig. 3-5, the embodiment of the invention discloses a fully-enclosed horizontal scroll compressor with an exhaust oil filtering structure, the main structure of which is the same as that of the existing fully-enclosed horizontal scroll compressor shown in fig. 1-2, and the fully-enclosed horizontal scroll compressor comprises a shell 1 and a bearing support plate 2 installed at one end in the shell 1, and in addition, a scroll assembly 7 (comprising a fixed scroll and a movable scroll), a frame 8, a crankshaft 9, a motor 10, an oil pump 11 and the like are also installed in the shell 1. Specifically, the shell 1 comprises a middle shell 101, and a front end enclosure 102 and a rear end enclosure 103 on two sides, one end of the shell 101 is provided with a frame 8, the other end is provided with a bearing support plate 2, two ends of a crankshaft 9 are pivoted with the frame 8 and the bearing support plate 2, an oil pump 11 is arranged on the bearing support plate 2, an exhaust cavity 3 is formed between the bearing support plate 2 and the rear end enclosure 103 of the shell 1, the bottom of the exhaust cavity 3 is provided with an oil pool 4, the shell 1 is provided with an exhaust pipe 5 which can be communicated with the exhaust cavity 3, the bearing support plate 2 is provided with an air passage 21 which is a plurality of through holes, the exhaust cavity 3 is internally provided with an exhaust oil filtering structure 6 for filtering lubricating oil from the exhaust cavity 3 to the exhaust pipe 5, the exhaust oil filtering structure 6 can be a filtering plane or a hole structure on a spatial curved surface, the hole structures can be arranged on the plane or the spatial curved surface, the spatial curved surface structure can increase the oil filtering surface area, the gas from the gas channel 21 passes through the hole structure on the plane or the space curved surface, which is more beneficial to the condensation of the lubricating oil, thereby effectively separating the gas and the oil through the exhaust oil filtering structure 6, and reducing the oil quantity discharged by the compressor.

In this embodiment, the exhaust oil filtering structure 6 divides the exhaust cavity 3 into a first air chamber 31, a second air chamber 32 and a third air chamber 33 which can be communicated, the oil pool 4 is positioned at the lower side in the first air chamber 31, the exhaust pipe 5 is connected with the third air chamber 33, the gas passage 21 is connected with the second air chamber 32, the exhaust oil filtering structure 6 is provided with oil filtering holes 61 which are communicated with the second air chamber 32 and the third air chamber 33, when gas enters the third air chamber 33 from the second air chamber 32, filtering is realized through the oil filtering holes 61 on the exhaust oil filtering structure 6, specifically, the exhaust oil filtering structure 6 comprises a partition plate 62 and an oil filtering plate 63 which is provided with the oil filtering holes 61, the partition plate 62 is positioned above the first air chamber 31, the oil filtering plate 63 divides the part of the exhaust cavity 3 positioned above the first air chamber 31 into the second air chamber 32 and the third air chamber 33, wherein the hole diameter of the oil filtering hole 61 on the oil filtering plate 63 which is close to the gas passage 21 is smaller than that of the oil filtering hole 61 which is far from the gas passage 21, this is because the content of lubricating oil in the gas gradually decreases with distance away from the gas passage 21 as the gas flows through the oil filter plate 63 through the gas passage 21, and thus the proximal end hole is smaller and the distal end hole is larger. The partition plate 62 is a non-porous plate, so that the lubricating oil foam in the oil pool 4 can be effectively blocked from entering the second air chamber 32 or the third air chamber 33.

In this embodiment, in order to realize the installation and fixation of the exhaust oil filtering structure 6, the exhaust oil filtering structure 6 further includes a first connecting plate 64 and a second connecting plate 65 which are arranged on the same side of the partition plate 62, one end of the first connecting plate 64 is connected with one end of the partition plate 62, the other end of the first connecting plate is connected with one end of the oil filtering plate 63, one end of the second connecting plate 65 is connected with the other end of the partition plate 62, and the first connecting plate 64 and the second connecting plate 65 are provided with a connecting hole 66 for connecting the bearing support plate 2, so as to be fixed by a screw 12 penetrating through the connecting hole 66, wherein the first connecting plate 64, the second connecting plate 65, the partition plate 62 and the oil filtering plate 63 are of an integrated bending and forming structure, so as to improve the processing efficiency and the manufacturing cost of the exhaust oil filtering structure 6. Alternatively, the exhaust oil filter structure 6 may also be welded, for example, by welding the partition plate 62 to the inner wall of the rear head 103.

In this embodiment, one end of the partition plate 62 close to the exhaust pipe 5 is inclined downward toward the other end, and the installation manner of inclining downward toward the right is more favorable for the lubricating oil separated from the lower part of the partition plate 62 to drip toward the oil sump 4, so as to reduce the possibility that the lubricating oil is carried away from the plate surface by re-foaming along with the gas flow.

In the present embodiment, in order to discharge the filtered liquid lubricating oil into the oil sump 4 below in time, at least one side of the partition plate 62 is provided with a gap 34 for discharging oil into the oil sump 4, specifically, the gap 34 exists between one side of the partition plate 62 and the oil pump 11, and between the other side of the partition plate 62 and the rear head 103. Considering that the lubricating oil separated after filtration is collected in the third air chamber 33, the oil is discharged to the oil sump 4 only through the slits 34 with low efficiency, oil accumulation occurs in the third air chamber 33, and the oil accumulation may be foamed in the third air chamber 33 and directly carried out of the compressor by the air flow if the oil accumulation does not flow into the oil sump 4 in time. An oil passing groove 67 is formed at the other end of the oil filtering plate 63, and the partition plate 62 inclines downwards to the right, so that the filtered lubricating oil can flow to the oil pool 4 along the partition plate 62 through the oil passing groove 67 in time, and oil accumulation in the third air chamber 33 is avoided.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.

Claims

1. The utility model provides a take full horizontal scroll compressor that seals of exhaust oil strain structure, includes casing (1) and installs bearing support board (2) of one end in casing (1), bearing support board (2) with casing (1) forms one row of gas chamber (3), the bottom in exhaust chamber (3) is provided with oil bath (4), install on casing (1) and to communicate blast pipe (5) in exhaust chamber (3), be provided with gas passage (21) on bearing support board (2), its characterized in that, be provided with in exhaust chamber (3) to following exhaust chamber (3) flow in the exhaust pipe (5) exhaust oil strain structure (6) of the gas filtration lubricating oil.

2. The fully-sealed horizontal scroll compressor with the exhaust oil filtering structure according to claim 1, wherein the exhaust oil filtering structure (6) divides the exhaust cavity (3) into a first air chamber (31), a second air chamber (32) and a third air chamber (33) which can be communicated, the oil pool (4) is located at the lower side in the first air chamber (31), the exhaust pipe (5) is connected with the third air chamber (33), the gas channel (21) is connected with the second air chamber (32), and oil filtering holes (61) which are communicated with the second air chamber (32) and the third air chamber (33) are arranged on the exhaust oil filtering structure (6).

3. The fully-enclosed horizontal scroll compressor with the exhaust oil filtering structure according to claim 2, wherein the exhaust oil filtering structure (6) comprises a partition plate (62) and an oil filtering plate (63) provided with the oil filtering holes (61), the partition plate (62) is located above the first air chamber (31), and the oil filtering plate (63) divides the part of the exhaust cavity (3) located above the first air chamber (31) into the second air chamber (32) and the third air chamber (33).

4. The fully-enclosed horizontal scroll compressor with an exhaust oil filtering structure according to claim 3, wherein at least one side of the partition plate (62) is provided with a slit (34) for discharging oil to the oil sump (4).

5. The fully-enclosed horizontal scroll compressor with the exhaust oil filtering structure according to claim 3, wherein the diameter of the oil filtering holes (61) on the oil filtering plate (63) close to the gas passage (21) is smaller than the diameter of the oil filtering holes (61) far away from the gas passage (21).

6. The fully-enclosed horizontal scroll compressor with the exhaust oil filtering structure according to claim 3, wherein the exhaust oil filtering structure (6) further comprises a first connecting plate (64) and a second connecting plate (65) which are arranged on the same side of the partition plate (62), one end of the first connecting plate (64) is connected with one end of the partition plate (62), the other end of the first connecting plate is connected with one end of the oil filtering plate (63), one end of the second connecting plate (65) is connected with the other end of the partition plate (62), and connecting holes (66) for connecting the bearing support plate (2) are formed in the first connecting plate (64) and the second connecting plate (65).

7. The fully-enclosed horizontal scroll compressor with the exhaust oil filtering structure according to claim 6, wherein the first connecting plate (64), the second connecting plate (65), the partition plate (62) and the oil filtering plate (63) are of an integral bending forming structure.

8. The fully-enclosed horizontal scroll compressor with an exhaust oil filtering structure according to any one of claims 3 to 7, wherein one end of the partition plate (62) near the exhaust pipe (5) is disposed obliquely downward toward the other end.

9. The fully-enclosed horizontal scroll compressor with the exhaust and oil filtering structure according to claim 8, wherein the other end of the oil filter plate (63) abuts against the partition plate (62), and the other end of the oil filter plate (63) is provided with an oil passing groove (67).