Scroll compressor exhaust cover

Abstract

The utility model discloses a scroll compressor exhaust cover, including the exhaust cover main part, the upper side of exhaust cover main part is provided with the exhaust hole, the upper side of exhaust cover main part is provided with the bolt hole away from the exhaust hole, the inside upper side of exhaust cover main part is close to the exhaust hole and is provided with the exhaust chamber, the inside of exhaust cover main part is provided with the acceleration chamber between exhaust chamber and high pressure chamber. The utility model is provided with a plurality of baffle and forms a plurality of separation chamber, through ceaseless change oil gas mixture's direction of travel, makes oil gas mixture through the impact corresponding baffle, through making oil droplet adhere wall surface separation oil gas, lighter gas enters exhaust chamber, and discharges from the exhaust port, and the exhaust space is big can reduce exhaust pulse, and the oil droplet separated out is along the wall surface backflow, finally converges to high pressure chamber below through corresponding oil return hole, and backflow to compressor main bearing part lubrication main bearing through the oil return channel on the static disc, and oil separation efficiency is higher and stable.

Description

Technical Field

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

[0002] During the operation of a scroll compressor, the refrigerant typically mixes with the refrigeration oil. Since the compressor refrigeration oil is dissolved in the refrigerant, it circulates together with the refrigerant in the air conditioning system. For the compressor, within a certain range, more compressor oil results in better lubrication; however, for air conditioners, the presence of compressor oil can actually reduce cooling capacity. Therefore, we must limit the oil content in the refrigerant at the compressor outlet while ensuring the compressor's normal oil content. The scroll compressor's discharge cover is a crucial structural component. Currently, the mainstream design uses a centrifugal oil separator integrated into the discharge cover. Compressed gas exits from the static plate's discharge port and enters the high-pressure chamber of the discharge cover. It then enters through the oil separator inlet and rotates tangentially around the gap between the inner and outer walls. Oil and gas primarily separate during this rotating flow. The separated lubricating oil deposits at the bottom of the oil-gas separator, while the gas exits through the outlet in the middle of the inner wall.

[0003] However, this structure has two drawbacks in application. First, the exhaust gas must pass through small holes, narrow gaps, and long small holes, resulting in multiple throttling processes and high exhaust resistance. This causes the pressure of the gas in the high-pressure chamber to be higher than the exhaust outlet pressure, leading to increased power consumption and temperature. Second, the oil separator tube needs to be press-fitted, requiring additional equipment on the production line. Furthermore, after pressing, severe pressure deviation is observed, with the bottom of the oil separator tube touching the tube wall, which is inconsistent with the design intent. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a scroll compressor exhaust cover that solves the above-mentioned problem.

[0005] To achieve the above objectives, a scroll compressor exhaust cover is provided, comprising an exhaust cover body, an exhaust hole on one side of the upper part of the exhaust cover body, a bolt hole on the side of the upper part of the exhaust cover body away from the exhaust hole, an exhaust chamber on the upper part of the exhaust cover body near the exhaust hole, an acceleration chamber between the exhaust chamber and a high-pressure chamber inside the exhaust cover body, a first separation chamber on the side of the high-pressure chamber away from the bolt hole, a baffle plate fixedly connected to the upper part of the first separation chamber, a second separation chamber on the side of the high-pressure chamber away from the first separation chamber, a second partition between the acceleration chamber and the second separation chamber, a fourth separation chamber on the upper part of the exhaust cover body near the bolt hole, a sixth partition between the exhaust chamber and the fourth separation chamber, a third separation chamber below the fourth separation chamber, a fifth partition between the third separation chamber and the fourth separation chamber, a fourth partition between the lower part of the third separation chamber and the second separation chamber, a first oil return hole and a second oil return hole respectively on both sides of the bottom of the high-pressure chamber, and a third oil return hole at the bottom of the second separation chamber.

[0006] According to the aforementioned scroll compressor exhaust cover, a first partition is provided around the high-pressure chamber, and the entire structure is surrounded by the first partition. A vent hole is provided on the upper side of the first partition near the first separation chamber.

[0007] According to the aforementioned scroll compressor exhaust cover, a vent hole connected to the acceleration chamber is provided on the side of the first separation chamber away from the high-pressure chamber.

[0008] According to the aforementioned scroll compressor exhaust cover, a third partition is provided above the middle part of the second separation chamber.

[0009] According to the aforementioned scroll compressor exhaust cover, the end of the acceleration chamber away from the first separation chamber is connected to the second separation chamber through a second partition. The upper part of the second separation chamber is connected to the third separation chamber through a fourth partition. The upper part of the third separation chamber is connected to the fourth separation chamber through a fifth partition. A vent hole connecting the exhaust chamber and the fourth separation chamber is provided below the sixth partition.

[0010] According to the aforementioned scroll compressor exhaust cover, the exhaust cover body is provided with an oil return chamber below the second separation chamber, which is respectively connected to the second oil return hole and the third oil return hole.

[0011] The above solution has at least one of the following beneficial effects:

[0012] 1. This utility model is equipped with multiple partitions forming multiple separation chambers. By continuously changing the direction of travel of the oil-gas mixture, the oil-gas mixture is caused to collide with the corresponding partitions, and the oil droplets are separated from the oil by adhering to the wall surface. The lighter gas enters the exhaust chamber and is discharged from the exhaust port. The large exhaust space can reduce exhaust pulsation, while the separated oil droplets flow back along the wall surface and finally converge below the high-pressure chamber through the corresponding oil return hole. They then flow back to the compressor main bearing part through the oil return channel on the stationary plate to lubricate the main bearing. The oil separation efficiency is high and stable, which enhances the practicality of the device.

[0013] 2. Compared with the existing centrifugal exhaust mechanism that requires oil separator pipe, this utility model mainly utilizes the inertial separation method. It uses the collision effect of baffles and deflectors as well as the sudden change in flow channel area to separate oil droplets. The exhaust does not pass through small holes or narrow holes, resulting in low exhaust resistance, reduced power loss, improved overall compressor performance, and enhanced device practicality.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a bottom-view perspective view of the exhaust cover of a scroll compressor according to the present invention.

[0017] Figure 2 This is a top-view three-dimensional structural diagram of an exhaust cover for a scroll compressor according to the present invention;

[0018] Figure 3 This is a front structural diagram of the exhaust cover of a scroll compressor according to the present invention.

[0019] Legend:

[0020] 1. Exhaust cover body; 2. Exhaust port; 3. Exhaust chamber; 4. First separation chamber; 5. First baffle; 6. High pressure chamber; 7. First oil return port; 8. Second oil return port; 9. Acceleration chamber; 10. Second baffle; 11. Second separation chamber; 12. Third oil return port; 13. Fourth baffle; 14. Third separation chamber; 15. Fifth baffle; 16. Fourth separation chamber; 17. Sixth baffle; 18. Bolt hole; 19. Baffle plate; 20. Third baffle. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. Preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present utility model. The drawings are all in a very simplified form and use non-precise proportions. They are only used to help to explain the embodiments of the present utility model in a convenient and clear way, and should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-3 This utility model provides a scroll compressor exhaust cover, including an exhaust cover body 1. An exhaust hole 2 is provided on the upper side of the exhaust cover body 1. A bolt hole 18 is provided on the upper side of the exhaust cover body 1 away from the exhaust hole 2. An exhaust chamber 3 is provided on the upper side of the exhaust cover body 1 near the exhaust hole 2. A high-pressure chamber 6 is provided on the lower side of the interior of the exhaust cover body 1. A first partition 5 is provided around the high-pressure chamber 6, and the entire structure is surrounded by the first partition 5. An acceleration chamber 9 is provided inside the exhaust cover body 1 between the exhaust chamber 3 and the high-pressure chamber 6. A first oil return hole 7 and a second oil return hole 8 are respectively provided on both sides of the bottom of the high-pressure chamber 6. A third oil return hole 12 is provided at the bottom of the second separation chamber 11. An oil return chamber is provided below the second separation chamber 11, which is connected to the second oil return hole 8 and the third oil return hole 12 respectively. The separated oil droplets can flow back along the wall and finally converge below the high-pressure chamber 6 through the first oil return hole 7, the second oil return hole 8 and the third oil return hole 12. The oil then flows back to the compressor main bearing part through the oil return channel on the stationary plate to lubricate the main bearing.

[0023] A first separation chamber 4 is provided on the side of the high-pressure chamber 6 away from the bolt hole 18. A vent hole is provided on the upper side of the first partition plate 5 near the first separation chamber 4. A baffle plate 19 is fixedly connected to the upper part of the first separation chamber 4. A vent hole connected to the acceleration chamber 9 is provided on the upper side of the first separation chamber 4 away from the high-pressure chamber 6. A second separation chamber 11 is provided on the side of the high-pressure chamber 6 away from the first separation chamber 4. A second partition plate 10 is provided between the acceleration chamber 9 and the second separation chamber 11. The end of the acceleration chamber 9 away from the first separation chamber 4 is connected to the second separation chamber 11 through the second partition plate 10. A third partition plate 20 is provided on the upper part of the middle of the second separation chamber 11. A fourth separation chamber 16 is provided on the upper side of the exhaust cover body 1 near the bolt hole 18. A sixth partition plate 17 is provided between the exhaust chamber 3 and the fourth separation chamber 16. A vent hole connecting the exhaust chamber 3 and the fourth separation chamber 16 is provided below the sixth partition plate 17. A third separation chamber 14 is provided below the fourth separation chamber 16. A fifth partition 15 is provided between the third separation chamber 14 and the fourth separation chamber 16. The upper part of the third separation chamber 14 is connected to the fourth separation chamber 16 through the fifth partition 15. A fourth partition 13 is provided between the lower part of the third separation chamber 14 and the second separation chamber 11. The upper part of the second separation chamber 11 is connected to the third separation chamber 14 through the fourth partition 13. Multiple partitions form multiple separation chambers. By continuously changing the direction of travel of the oil-gas mixture, the oil-gas mixture is caused to collide with the corresponding partitions, and the oil droplets are separated from the oil by adhering to the wall surface. The lighter gas enters the exhaust chamber 3 and is discharged through the exhaust port 2. The large exhaust space can reduce exhaust pulsation, while the separated oil droplets flow back along the wall surface and finally converge below the high-pressure chamber 6 through the corresponding oil return port. They then flow back to the compressor main bearing part through the oil return channel on the stationary plate to lubricate the main bearing. The oil separation efficiency is high and stable.

[0024] Working principle: During operation, the oil-gas mixture discharged from the static plate exhaust port enters the high-pressure chamber 6, is accelerated by the exhaust port on the first partition plate 5, and then impacts the baffle plate 19 for the first separation. Due to the folded shape design of the baffle plate 19, the oil-gas mixture can be accelerated a second time and its direction can be changed below the baffle plate 19. The separated oil deposits downwards into the first return oil port 7. The oil-gas mixture continues to be discharged upwards, and before entering the acceleration chamber 9, it can be impacted and accelerated again by the exhaust port, separating the oil. After being accelerated in the acceleration chamber 9, the oil is further separated. The second separation chamber 11 impacts the second partition 10 and the third partition 20 to separate the oil. At the third partition 20 of the second separation chamber 11, the oil is redirected and continues to pass through the third separation chamber 14 and the fourth separation chamber 16, impacting the fourth partition 13, the fifth partition 13 and the sixth partition 17 respectively. Finally, it enters the exhaust chamber 3 and is discharged through the exhaust port 2. All the separated oil droplets flow back along the wall and finally converge below the high pressure chamber 6 through the first oil return port 7, the second oil return port 8 and the third oil return port 12. They then flow back to the compressor main bearing section through the oil return channel on the stationary plate to lubricate the main bearing.

[0025] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A scroll compressor exhaust cover, comprising an exhaust cover body (1), characterized in that: An exhaust hole (2) is provided on one side of the upper part of the exhaust cover body (1). A bolt hole (18) is provided on the upper part of the exhaust cover body (1) away from the exhaust hole (2). An exhaust chamber (3) is provided on the upper part of the exhaust cover body (1) near the exhaust hole (2). A high-pressure chamber (6) is provided on the lower part of the interior of the exhaust cover body (1). An acceleration chamber (9) is provided inside the exhaust cover body (1) between the exhaust chamber (3) and the high-pressure chamber (6). A first separation chamber (4) is provided on the side of the high-pressure chamber (6) away from the bolt hole (18). A baffle plate (19) is fixedly connected to the upper part of the interior of the first separation chamber (4). A second separation chamber (11) is provided on the side of the high-pressure chamber (6) away from the first separation chamber (4). The acceleration chamber (9) A second partition (10) is provided between the exhaust chamber (3) and the second separation chamber (11). A fourth separation chamber (16) is provided on the upper side of the exhaust cover body (1) near the bolt hole (18). A sixth partition (17) is provided between the exhaust chamber (3) and the fourth separation chamber (16). A third separation chamber (14) is provided below the fourth separation chamber (16). A fifth partition (15) is provided between the third separation chamber (14) and the fourth separation chamber (16). A fourth partition (13) is provided between the third separation chamber (14) and the second separation chamber (11). A first oil return hole (7) and a second oil return hole (8) are respectively opened on both sides of the bottom of the high pressure chamber (6). A third oil return hole (12) is provided at the bottom of the second separation chamber (11).

2. The scroll compressor exhaust cover according to claim 1, characterized in that, The high-pressure chamber (6) is surrounded by a first partition (5), and the whole is surrounded by the first partition (5). A vent hole is provided on the side of the first partition (5) near the first separation chamber (4).

3. The scroll compressor exhaust cover according to claim 1, characterized in that, A vent is provided on the side of the first separation chamber (4) away from the high pressure chamber (6) and connected to the acceleration chamber (9).

4. The scroll compressor exhaust cover according to claim 1, characterized in that, A third partition (20) is provided above the middle part of the second separation chamber (11).

5. The scroll compressor exhaust cover according to claim 1, characterized in that, The end of the acceleration chamber (9) away from the first separation chamber (4) is connected to the second separation chamber (11) through the second partition (10). The upper part of the second separation chamber (11) is connected to the third separation chamber (14) through the fourth partition (13). The upper part of the third separation chamber (14) is connected to the fourth separation chamber (16) through the fifth partition (15). The lower part of the sixth partition (17) is provided with a ventilation hole that connects the exhaust chamber (3) and the fourth separation chamber (16).

6. The scroll compressor exhaust cover according to claim 1, characterized in that, The exhaust cover body (1) has an oil return chamber below the second separation chamber (11) that connects to the second oil return hole (8) and the third oil return hole (12).

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