CN219452401U - Compressor oil circulation structure - Google Patents
Compressor oil circulation structure Download PDFInfo
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- CN219452401U CN219452401U CN202223386185.3U CN202223386185U CN219452401U CN 219452401 U CN219452401 U CN 219452401U CN 202223386185 U CN202223386185 U CN 202223386185U CN 219452401 U CN219452401 U CN 219452401U
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- movable disc
- crankshaft
- disc
- resistant gasket
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Abstract
The utility model discloses a compressor oil circulation structure, wherein a boss is arranged in the middle of a shell, and separates a space between the shell and a movable disc into a crankshaft transmission cavity close to the movable disc and a low-pressure oil storage cavity far away from the movable disc; a high-pressure oil storage cavity is formed between the static disc and the end cover, and the high-pressure oil storage cavity is communicated with the low-pressure oil storage cavity through an oil return hole; the boss provides a wear-resistant gasket supporting surface, the wear-resistant gasket is arranged on the wear-resistant gasket supporting surface, and the movable disc is propped against the wear-resistant gasket; the movable disc is provided with a movable disc groove, the wear-resistant gasket is provided with a wear-resistant gasket hole, the boss of the shell is provided with an oil circulation channel, and the oil circulation channel is opposite to the wear-resistant gasket hole; in the periodic revolution motion, the movable disc groove is periodically communicated with the wear-resistant gasket hole or the crankshaft transmission cavity so as to pump the oil in the low-pressure oil storage cavity into the crankshaft transmission cavity.
Description
Technical Field
The utility model relates to the technical field of compressors, in particular to a compressor oil circulation structure.
Background
The frozen oil in the high-pressure exhaust cavity is throttled and then returns to the low-pressure cavity, and if one set of oil circulation system is not provided or the oil circulation efficiency is low, the return oil is accumulated in an oil pool, so that the effect is greatly reduced.
The operating components of the compressor (e.g., bearings, pump body, etc.) require lubrication and cooling of the refrigerant oil, which will mostly enter the piping with the refrigerant if there is no internal oil circulation circuit of the compressor or if the internal oil circulation circuit is poorly designed. An excessively high external oil circulation rate is generally unfavorable for the heat exchange efficiency of the evaporator and the condenser, and if the oil return is not smooth, the compressor is easily damaged due to oil shortage. Therefore, increasing the internal oil circulation rate of the compressor is an important way to ensure reliable operation of the compressor.
CN111648962a discloses an oil circulation structure of a horizontal scroll compressor, the inside of the compressor is divided into a high pressure chamber and a low pressure chamber by a partition plate 4. An oil-gas separation device 6 is arranged in the high-pressure cavity, and separates out lubricating oil in the exhaust gas and accumulates the lubricating oil in an oil pool 13 of the high-pressure cavity. The oil return pipe 7 is communicated with a lubricating oil channel 311 in the rotating shaft 31, and lubricates each movable part in the compressor through an oil hole formed in the rotating shaft. The lubricating oil lubricates the components and then collects at the bottom of the low pressure chamber housing to form the low pressure chamber sump 14. Meanwhile, the lubricating oil is mixed with the air suction flow and then is brought into the vortex compression cavity to lubricate the vortex plate, and then is discharged through exhaust, so that the circulation of the lubricating oil in the compressor shell is realized.
Although CN111648962a combines lubrication of three bearings, a long copper tube needs to be added, the cost is high, the slender copper tube is difficult to fix, the first-order mode is low, and resonance is easy to occur, so that the copper tube is broken or displaced to fail.
CN104421160a discloses a lubricating oil circulation system of a scroll compressor, wherein lubricating oil separated from an exhaust high-pressure cavity 4 of the scroll compressor enters a cavity 2 positioned at the back of a movable scroll of the scroll compressor, an oil inlet 1 is formed in the movable scroll of the scroll compressor, and then the oil inlet of the movable scroll enters the scroll cavity; the oil inlet hole of the movable scroll is closer to the center of the scroll line teeth of the fixed scroll relative to the exhaust hole 3 on the fixed scroll of the scroll compressor, and the back pressure of the movable scroll is larger than the pressure on the inner side of the oil inlet hole. After the technical scheme is adopted, cavity pressure is formed in the cavity at the back of the movable vortex plate, and the movable vortex plate generates proportional pressure to the fixed vortex plate, so that axial flexible sealing of the vortex end face is realized.
CN104421160a, although simple in structure, has the following problems: after the return oil of the high-pressure cavity enters the crank cavity, the return oil cannot be cooled and directly enters the vortex compression cavity, and the exhaust temperature can be increased, so that the durability of the compressor is not facilitated; the axial flexible sealing of the movable vortex disc is realized by forming high pressure in the crank cavity through high-pressure oil return, and the movable vortex disc has a good effect on a specific working condition, and when the exhaust pressure is too high, the sealing force is too high, so that the abrasion is increased.
Disclosure of Invention
In view of this, an object of the present utility model is to provide a compressor oil circulation structure in order to provide a simple and efficient oil circulation manner.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a compressor oil circulation structure comprises a shell, a crankshaft arranged in the shell, a static disc connected with the shell, a movable disc arranged in the shell and matched with the static disc, and an end cover connected with the static disc; the crankshaft drives the movable disc to make periodical revolution motion relative to the static disc; wherein, the liquid crystal display device comprises a liquid crystal display device,
the middle part of the shell is provided with a boss, and the space between the shell and the movable disc is divided into a crankshaft transmission cavity close to the movable disc and a low-pressure oil storage cavity far away from the movable disc by the boss;
a high-pressure oil storage cavity is formed between the static disc and the end cover, and the high-pressure oil storage cavity is communicated with the low-pressure oil storage cavity through an oil return hole;
the boss provides a wear-resistant gasket supporting surface, a wear-resistant gasket is arranged on the wear-resistant gasket supporting surface, and the movable disc abuts against the wear-resistant gasket;
the movable disc is provided with a movable disc groove, the wear-resistant gasket is provided with a wear-resistant gasket hole, the boss of the shell is provided with an oil circulation channel, and the oil circulation channel is opposite to the wear-resistant gasket hole;
and in the periodical revolution motion, the movable disc groove is periodically communicated with the wear-resistant gasket hole or the crankshaft transmission cavity so as to pump the oil in the low-pressure oil storage cavity into the crankshaft transmission cavity.
The compressor oil circulation structure described above, wherein the wear-resistant shim holes have inner edges near the center of the crankshaft and outer edges away from the center of the crankshaft;
the movable disc groove has an inner edge near the center of the crankshaft and an outer edge far from the center of the crankshaft;
the inner edge of the wear-resistant gasket hole (701) meets the following conditions:
R groove(s) -r＜R Inner part ＜R Groove(s) +r；
Wherein R is Groove(s) A radius of the outer edge of the movable disk groove; r is the rotation radius of the movable disc; r is R Inner part Is the radius of the inner edge of the wear pad hole.
In the above compressor oil circulation structure, in the periodic revolution motion, the movable disc groove is periodically communicated with or closed from the wear-resistant spacer hole.
In the compressor oil circulation structure, in the periodical revolution motion, when the movable disc moves to the upper dead point position, the movable disc groove and the wear-resistant gasket hole are closed.
The compressor oil circulation structure is characterized in that the middle part of the crankshaft is rotatably connected with the boss of the shell, and a main bearing is arranged between the middle part of the crankshaft and the boss of the shell;
the end part of the crankshaft is rotatably connected with the movable disc, and a movable disc bearing is arranged between the end part of the crankshaft and the movable disc.
The compressor oil circulation structure described above, wherein includes: the movable disc, the wear-resistant gasket, the boss of the shell and the crankshaft surround to form the crankshaft transmission cavity.
The compressor oil circulation structure is characterized in that a spiral pin is arranged at the oil return hole.
The compressor oil circulation structure is characterized in that a balancing block is arranged in the crankshaft transmission cavity.
The compressor oil circulation structure, wherein the oil circulation channels are one or more.
The compressor oil circulation structure described above, wherein includes: the high-pressure oil storage cavity is formed between the static disc and the dynamic disc, and an oil-gas separation device is arranged between the high-pressure cavity and the high-pressure oil storage cavity.
The utility model adopts the technology, so that compared with the prior art, the utility model has the positive effects that:
(1) The utility model provides a simple and efficient oil circulation mode: the return oil enters the oil tank and then is mixed with cold oil at the side of the motor, an oil circulation hole is formed in a position slightly higher than the oil return hole, the return oil is brought into a crankshaft transmission cavity through a groove on the movable disc to be atomized, the atomized cold oil lubricates a movable disc bearing and a main bearing on one side, and enters the pump body through an air suction runner to participate in main circulation on the other side.
(2) The oil return enters the oil pool instead of directly entering the crankshaft transmission cavity, so that the temperature of circulating oil is reduced, the exhaust temperature is reduced, and the service life of the compressor is prolonged.
(3) According to the utility model, oil is actively pumped into the crankshaft transmission cavity through the simple hole and the movable disc groove, and additional structure and parts are not needed.
(4) According to the utility model, through capillary action between the movable disc and the wear-resistant gasket, the lubrication between the movable disc and the wear-resistant gasket can be increased.
(5) The utility model not only can lubricate and cool the main bearings (the dynamic disc bearing and the main bearing), but also can lubricate the main bearings after fully atomizing and then entering the compression cavity.
Drawings
FIG. 1 is a schematic side cross-sectional view of a compressor oil circulation structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of a compressor oil circulation structure of the present utility model;
FIG. 3 is a schematic illustration of a movable disk and wear pad of the compressor oil circulation structure of the present utility model;
FIG. 4 is a schematic illustration of a movable disk and wear pad of the compressor oil circulation structure of the present utility model;
FIG. 5 is a schematic illustration of the bottom dead center position of the compressor oil circulation structure of the present utility model;
FIG. 6 is a schematic illustration of the bottom dead center position of the compressor oil circulation structure of the present utility model;
FIG. 7 is a schematic illustration of the top dead center position of the compressor oil circulation structure of the present utility model;
FIG. 8 is a schematic illustration of the top dead center position of the compressor oil circulation structure of the present utility model;
FIG. 9 is a schematic illustration of the cooperation of a movable disk and wear-resistant shims of the compressor oil circulation structure of the present utility model;
in the accompanying drawings: 1. a screw pin; 2. an oil return hole; 301. an oil circulation passage; 302. an oil circulation passage; 4. an end cap; 5. a static disc; 6. a movable plate; 7. wear-resistant gaskets; 8. a housing; 801. a siphon tank; 802. a siphon tank; 803. a flow passage; 9. a movable disc bearing; 10. a main bearing; 11. a balance weight; 12. a static disc exhaust port; 13. a crankshaft; A. a high pressure chamber; B. a high pressure oil storage chamber; C. a low pressure oil storage chamber; D. a crankshaft drive chamber; x, inner edge; y, outer edge.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "transverse," "vertical," and the like are used for convenience in describing the present utility model based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the device or element to be referred to must have a specific orientation, and thus should not be construed as limiting the present utility model.
Referring to fig. 1 to 9, a compressor oil circulation structure of a preferred embodiment is shown, which comprises a housing 8, a crankshaft 13 disposed in the housing 8, a stationary disc 5 connected with the housing 8, a movable disc 6 disposed in the housing 8 and matched with the stationary disc 5, and an end cover 4 connected with the stationary disc 5; wherein the crankshaft 13 drives the movable disk 6 in a periodical revolution relative to the stationary disk 5.
Further, as a preferred embodiment, the middle part of the housing 8 has a boss, which divides the space between the housing 8 and the movable disk 6 into a crank drive chamber D close to the movable disk 6 and a low pressure oil storage chamber C far from the movable disk 6.
Further, as a preferred embodiment, a high-pressure oil storage cavity B is formed between the static disc 5 and the end cover 4, and the high-pressure oil storage cavity B is communicated with the low-pressure oil storage cavity C through the oil return hole 2. The high-temperature refrigerating oil returned from the high-pressure oil storage cavity B firstly enters the low-pressure oil storage cavity (C) at the motor side and is mixed with cold oil components in the low-pressure oil storage cavity, so that the temperature of the circulating oil entering the compression cavity can be effectively reduced, the exhaust is reduced, and the service life of the compressor is prolonged.
Further, as a preferred embodiment, the boss provides a wear pad support surface on which the wear pad 7 is disposed, the movable disk 6 abutting the wear pad 7.
Further, as a preferred embodiment, the movable disk 6 is provided with a movable disk groove 601, the wear-resistant gasket 7 is provided with a wear-resistant gasket hole 701, the boss of the casing 8 is provided with oil circulation channels 301 and 302, and the oil circulation channels 301 and 302 are opposite to the wear-resistant gasket hole 701.
Further, as a preferred embodiment, in the periodical revolution motion, the movable plate groove 601 is periodically communicated with the wear pad hole 701 or with the crank chamber D to pump the oil in the low-pressure oil storage chamber C into the crank chamber D.
The liquid oil in the movable disc groove 601 can be fully paved with the wear-resistant gasket 7 through a capillary channel between the movable disc 6 and the wear-resistant gasket 7, so that the friction coefficient of the movable disc 6 and the wear-resistant gasket 7 is reduced, and the performance of the compressor is improved.
Further, as a preferred embodiment, the wear pad hole 701 has an inner side x near the center of the crankshaft 13 and an outer side y far from the center of the crankshaft 13.
Further, as a preferred embodiment, the movable disk groove 601 has an inner edge near the center of the crankshaft 13 and an outer edge distant from the center of the crankshaft 13.
Further, as a preferred embodiment, the inner side x of the wear pad hole 701 satisfies:
R groove(s) -r＜R Inner part ＜R Groove(s) +r；
Wherein R is Groove(s) A radius of an outer edge of the movable disk groove 601; r is the radius of rotation of the movable disk 6; r is R Inner part Is the radius of the inner edge x of the wear pad hole 701.
Preferably, as a preferred embodiment, the back surface of the movable disc 6 is provided with a movable disc groove 601 near the lower side, the wear-resistant gasket 7 is provided with a wear-resistant gasket hole 701 near the lower side, the wear-resistant gasket hole 701 is preferably a long hole, the long hole is more preferably a waist-shaped hole, and the long hole can be a rectangular hole with rounded corners in still other embodiments.
Preferably, as a preferred embodiment, the lower part of the supporting surface of the wear-resistant pad is provided with one or more holes communicated with the wear-resistant pad 7.
The main characteristic of the structure is that the long holes on the wear-resistant gasket 7 are communicated with the movable disc groove 601 in a larger area when the movable disc 6 runs for one circle, and the wear-resistant gasket holes 701 are not communicated with the movable disc groove 601 when the movable disc 6 runs to the top dead center position. Thus, for wear pad hole 701, inner side R has the characteristics described by the above formula.
More specifically, please refer to fig. 5 and 6, R Inner max ＝R Lower part(s) ＝R Groove(s) +r.
More specifically, please refer to fig. 7 and 8, R Internal min ＝R Upper part ＝R Groove(s) -r。
Wherein R is Lower part(s) R is the distance from the bottom dead center position to the outer edge of the rotor groove 601 Upper part Is the distance from the top dead center position to the outer edge of the cam groove 601.
Further, as a preferred embodiment, the moving plate groove 601 is periodically communicated or closed with the wear pad hole 701 in the periodic revolution motion.
Further, as a preferred embodiment, the movable plate groove 601 is closed with the wear pad hole 701 when the movable plate 6 is operated to the top dead center position in the periodical revolution motion.
Further, as a preferred embodiment, a middle part of the crankshaft 13 is rotatably connected with a boss of the housing 8, and a main bearing 10 is provided between the middle part of the crankshaft 13 and the boss of the housing 8.
Further, as a preferred embodiment, the end of the crankshaft 13 is rotatably connected to the movable disk 6, and a movable disk bearing 9 is provided between the end of the crankshaft 13 and the movable disk 6.
Further, as a preferred embodiment, it comprises: the movable disk 6, the wear-resistant gasket 7, a boss of the shell 8 and the crankshaft 13 are surrounded to form a crankshaft transmission cavity D.
Further, as a preferred embodiment, a spiral pin 1 is provided at the oil return hole 2.
Further, as a preferred embodiment, a balance weight 11 is provided in the crank chamber D.
Further, as a preferred embodiment, the oil circulation passages 301,302 are one or more.
Further, as a preferred embodiment, it comprises: a high-pressure cavity A and a high-pressure oil storage cavity B are formed between the static disc 5 and the dynamic disc 6, and an oil-gas separation device is arranged between the high-pressure cavity A and the high-pressure oil storage cavity B.
Specifically, in this embodiment, the compressed working medium is discharged from the exhaust port 12 of the static disc after being compressed, and enters the high-pressure chamber a formed by the static disc 5 and the end cover 4, and the compressed working medium at this time is a mixture of gaseous refrigerant and oil mist.
Further, after the oil-gas mixture is separated by the oil separating device, part of oil mist is collected into liquid oil and flows into the high-pressure oil storage cavity B, and the liquid oil enters the low-pressure oil storage cavity C through the oil return hole 2 after being throttled by the spiral pin 1.
Further, the return oil enters the groove 601 of the movable disc 6 after passing through the oil circulation channel 301 and the oil circulation channel 302 which are positioned above the oil return hole 2, and the groove 601 of the movable disc 6 and the wear-resistant gasket 7 continuously form a communication-closed circulation process in the rotation process, so that the oil in the low-pressure oil storage cavity C is pumped into the crankshaft transmission cavity D formed by the movable disc 6, the wear-resistant gasket 7, the shell 8, the main bearing 10 and the crankshaft 13.
Further, the liquid oil is dispersed by the balance weight 11 in the crank chamber D to form oil mist, and the main bearing 10 and the movable disk bearing 9 can be lubricated.
Further, the flow passage 803 on the casing 8 forms a local low pressure due to the high-speed air flow, and is communicated with the crank drive cavity D through the siphon groove 801 and the siphon groove 802 which are formed on the casing 8, so that the oil mist in the crank drive cavity D is sucked into the flow passage and enters the vortex disc suction inlet along with the refrigerant, and is discharged from the static disc exhaust port 12 after being compressed by the vortex disc, thereby completing one oil circulation.
The foregoing description is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present utility model, and are intended to be included within the scope of the present utility model.
Claims (10)
1. The compressor oil circulation structure comprises a shell (8), a crankshaft (13) arranged in the shell (8), a static disc (5) connected with the shell (8), a movable disc (6) arranged in the shell (8) and matched with the static disc (5), and an end cover (4) connected with the static disc (5); wherein the crankshaft (13) drives the movable disc (6) to make periodical revolution motion relative to the static disc (5);
it is characterized in that the method comprises the steps of,
the middle part of the shell (8) is provided with a boss, and the boss divides a space between the shell (8) and the movable disc (6) into a crankshaft transmission cavity (D) close to the movable disc (6) and a low-pressure oil storage cavity (C) far away from the movable disc (6);
a high-pressure oil storage cavity (B) is formed between the static disc (5) and the end cover (4), and the high-pressure oil storage cavity (B) is communicated with the low-pressure oil storage cavity (C) through an oil return hole (2);
the boss provides a wear-resistant gasket supporting surface, a wear-resistant gasket (7) is arranged on the wear-resistant gasket supporting surface, and the movable disc (6) is propped against the wear-resistant gasket (7);
the movable disc (6) is provided with a movable disc groove (601), the wear-resistant gasket (7) is provided with a wear-resistant gasket hole (701), the boss of the shell (8) is provided with oil circulation channels (301, 302), and the oil circulation channels (301, 302) are opposite to the wear-resistant gasket hole (701);
in the periodical revolution motion, the movable disc groove (601) is periodically communicated with the wear-resistant gasket hole (701) or the crank transmission cavity (D) so as to pump oil in the low-pressure oil storage cavity (C) into the crank transmission cavity (D).
2. The compressor oil circulation structure according to claim 1, characterized in that the wear washer hole (701) has an inner edge (x) close to the center of the crankshaft (13) and an outer edge (y) distant from the center of the crankshaft (13);
the movable disk groove (601) has an inner edge near the center of the crankshaft (13) and an outer edge far from the center of the crankshaft (13);
the inner edge (x) of the wear-resistant spacer hole (701) satisfies the following conditions:
R groove(s) -r＜R Inner part ＜R Groove(s) +r；
Wherein R is Groove(s) Is the movable disc groove(601) Is defined by a radius of the outer edge of the outer shell; r is the rotation radius of the movable disc (6); r is R Inner part Is the radius of the inner edge (x) of the wear pad hole (701).
3. The compressor oil circulation structure according to claim 1, wherein the movable disc groove (601) is periodically communicated or closed with the wear pad hole (701) in the periodic revolution motion.
4. A compressor oil circulation structure according to claim 3, wherein the movable plate groove (601) is closed with the wear pad hole (701) when the movable plate (6) is operated to a top dead center position in the periodical revolution motion.
5. Compressor oil circulation structure according to claim 1, characterized in that the middle part of the crankshaft (13) is rotatably connected with the boss of the housing (8), a main bearing (10) being arranged between the middle part of the crankshaft (13) and the boss of the housing (8);
the end part of the crankshaft (13) is rotatably connected with the movable disc (6), and a movable disc bearing (9) is arranged between the end part of the crankshaft (13) and the movable disc (6).
6. The compressor oil circulation structure of claim 5, comprising: the movable disc (6), the wear-resistant gasket (7), the boss of the shell (8) and the crankshaft (13) are surrounded to form the crankshaft transmission cavity (D).
7. Compressor oil circulation structure according to claim 1, characterized in that the oil return hole (2) is provided with a screw pin (1).
8. Compressor oil circulation structure according to claim 1, characterized in that a counterweight (11) is arranged in the crank chamber (D).
9. The compressor oil circulation structure according to claim 1, wherein the oil circulation passage (301, 302) is one or more.
10. The compressor oil circulation structure according to claim 1, comprising: a high-pressure cavity (A) and a high-pressure oil storage cavity (B) are formed between the static disc (5) and the movable disc (6), and an oil-gas separation device is arranged between the high-pressure cavity (A) and the high-pressure oil storage cavity (B).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223386185.3U CN219452401U (en) | 2022-12-16 | 2022-12-16 | Compressor oil circulation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223386185.3U CN219452401U (en) | 2022-12-16 | 2022-12-16 | Compressor oil circulation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219452401U true CN219452401U (en) | 2023-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223386185.3U Active CN219452401U (en) | 2022-12-16 | 2022-12-16 | Compressor oil circulation structure |
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| Country | Link |
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| CN (1) | CN219452401U (en) |
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2022
- 2022-12-16 CN CN202223386185.3U patent/CN219452401U/en active Active
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