Cross slip ring lubricating structure of scroll compressor

Abstract

The utility model discloses a scroll compressor cross slip ring lubricating structure, which comprises a static scroll plate, a static scroll plate, a cross slip ring, a cross slip ring, a cross slip ring, a cross slip ring, a cross slip ring, a cross slip ring, a cross slip ring, a cross slip ring and a cross slip ring, and is characterized in that the static scroll plate is provided with a lower end plate; the movable scroll plate is provided with a movable scroll roll matched with the fixed scroll roll; an upper key of the cross-shaped sliding ring is connected with the first key groove; wherein the static scroll ring and the dynamic scroll form an air suction cavity and a compression cavity, and the first key groove is provided with an oil supply channel communicated with the compression cavity. In the working process of the compressor, a mixture of lubricating oil and a refrigerant is sucked into the air suction cavity through the air suction port and further enters the compression cavity to compress the refrigerant, and a small amount of compressed refrigerant is discharged through the oil supply channel, so that when the refrigerant is discharged, an upper key of the cross-shaped sliding ring is lubricated, abrasion is avoided, and the service life of the compressor is prolonged. The service life of the compressor is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of scroll compressors, and in particular relates to a scroll compressor cross slip ring lubrication structure. Background Art

[0002] The compression mechanism of the scroll compressor prevents the orbiting scroll from rotating relative to the fixed scroll by setting a cross slip ring between the orbiting scroll and the main frame. However, when the scroll compressor is running, friction and collision are easily generated between the convex key of the slip ring and the keyway of the main frame, which increases the friction loss of the scroll compressor. The cross slip ring commonly used in the prior art has two sets of keys, one set cooperates with the keyway of the orbiting scroll, and the other set cooperates with the keyway of the fixed scroll. The lubrication of the keyway relies on the lubricating oil entrained in the refrigerant inside the compressor. Because the keyway of the orbiting scroll is located lower, above the thrust surface, the lubricating oil overflowing from the thrust surface can lubricate it; while the keyway of the fixed scroll is located higher, not on the scroll suction passage, and is far away from the suction passage, so its lubrication effect is worse than the keyway on the orbiting scroll, and it is more likely to cause the key on the cross slip ring to wear.

[0003] For example, application number 202220474740.9 discloses a scroll compressor lubrication structure, which has an oil guide groove and a first channel on the guide ring, and a second channel connected to the first channel is provided above the first keyway portion. The oil is collected in the oil guide groove, and the top key of the first keyway is lubricated through the first channel and the second channel. Under normal operation, this structure can effectively lubricate the cross ring, but under extreme operating conditions such as low evaporation temperature and high condensation temperature, it will have an adverse effect on the lubricating oil and wear will still occur. Therefore, a cross ring lubrication structure with simple structure and good lubrication effect is needed. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a scroll compressor cross slip ring structure. When the scroll compressor is working, the movable scroll plate moves linearly around the stationary scroll plate, and the cross slip ring reciprocates in the stationary scroll plate. The mixture of lubricating oil and refrigerant is sucked into the suction chamber through the suction port. During the further operation of the movable scroll plate, the refrigerant enters the compression chamber to compress the refrigerant. A small amount of compressed refrigerant is discharged through the oil supply channel. Because the refrigerant contains lubricating oil, the cross slip ring will be lubricated when the refrigerant is discharged, thereby increasing the service life of the compressor.

[0005] Specifically, the utility model discloses a scroll compressor cross-slip ring lubrication structure, comprising:

[0006] A fixed scroll plate, the fixed scroll plate having a lower end plate and a fixed scroll, and a side wall of the lower end plate having a first keyway;

[0007] A movable scroll having a movable scroll that matches a stationary scroll;

[0008] A cross ring, wherein the upper key of the cross ring is connected to the first keyway; wherein,

[0009] The fixed scroll and the movable scroll form an air suction chamber and a compression chamber, and the first key groove has an oil supply passage connected with the compression chamber.

[0010] When the scroll compressor is working, the orbiting scroll moves around the stationary scroll in translation, and the cross-slip ring reciprocates in the stationary scroll. The mixture of lubricating oil and refrigerant is sucked into the suction chamber through the suction port. During the further operation of the orbiting scroll, the refrigerant in the suction chamber will enter the compression chamber, which compresses the refrigerant. A small amount of compressed refrigerant is discharged through the oil supply channel, and the rest of the refrigerant is further compressed. Because the refrigerant contains lubricating oil, the upper key of the cross-slip ring will be lubricated when the refrigerant is discharged to avoid wear and increase the service life of the compressor.

[0011] Furthermore, the cross-sectional area of ​​the oil supply channel is 1.13-3.14 square millimeters.

[0012] Furthermore, the oil supply channel is arranged on the side wall of the first keyway.

[0013] Furthermore, the cross-sectional shape of the oil supply channel is circular.

[0014] Furthermore, the oil supply channel is arranged parallel to or inclined with respect to the horizontal plane.

[0015] By adopting the above solution, the oil supply channel is arranged on the side wall of the first keyway, the shape of the oil supply channel is circular, and the upper key of the cross ring is lubricated by the suction and discharge of the refrigerant.

[0016] Furthermore, the oil supply channel is arranged at the bottom of the first key groove.

[0017] Furthermore, the cross-sectional shape of the oil supply channel is square.

[0018] Furthermore, the width of the oil supply channel is at least 2 mm.

[0019] By adopting the above solution, the oil supply channel is arranged at the bottom of the first keyway and is square in shape for easy processing.

[0020] Compared with the prior art, the utility model has the following beneficial effects: high processing efficiency, no need to open too many oil grooves and oil holes; lubrication of the cross slip ring is carried out through exhaust, lubrication is more convenient, and the structure is simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required to be used in the embodiments or the description of the prior art will be briefly introduced below.

[0022] Figure 1 It is a longitudinal cross-sectional view of the lubrication structure;

[0023] Figure 2 It is a transverse cross-sectional view of the lubrication structure;

[0024] Figure 3 It is a schematic diagram of the circular oil supply channel of the static scroll;

[0025] Figure 4 This is a schematic diagram of the square oil supply channel of the static scroll;

[0026] Figure 5 It is a cross-sectional view of the horizontal arrangement of the circular oil supply channel of the fixed scroll;

[0027] Figure 6 It is a cross-sectional view of the circular oil supply channel of the fixed scroll plate which is arranged obliquely;

[0028] Figure 7 It is a cross-sectional view of the square oil supply passage of the static scroll.

[0029] The numbers involved in the accompanying drawings are as follows: fixed scroll 1, lower end plate 11, fixed scroll 12, first keyway 13, oil supply channel 14, suction channel 15, suction chamber 16, compression chamber 17, movable scroll 2, movable scroll 21, Cross slip ring 3, upper key 31. DETAILED DESCRIPTION

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0031] like Figure 1-7 As shown, the utility model discloses a scroll compressor cross-slip ring lubrication structure, comprising:

[0032] The fixed scroll plate 1 comprises a lower end plate 11 and a fixed scroll 12, and a side wall of the lower end plate 11 comprises a first key groove 13;

[0033] A movable scroll 2, wherein the movable scroll 2 has a movable scroll 21 matching the stationary scroll 12;

[0034] The cross ring 3, the upper key 31 of the cross ring 3 is slidably connected with the first key groove 13; wherein,

[0035] The fixed scroll 12 and the movable scroll 21 form a suction chamber 16 and a compression chamber 17 , and the first key groove 13 has an oil supply passage 14 communicating with the compression chamber 17 .

[0036] When the scroll compressor is working, the orbiting scroll 2 moves horizontally around the stationary scroll 1, and the cross ring 3 reciprocates in the stationary scroll 1. The mixture of lubricating oil and refrigerant is sucked into the suction chamber 16 through the suction port. During the further operation of the orbiting scroll 2, the refrigerant in the suction chamber 16 will enter the compression chamber 17, and the compression chamber 17 will compress the refrigerant. A small amount of compressed refrigerant is discharged through the oil supply channel 14 under the action of the pressure difference, and the rest of the refrigerant will be further compressed in the compression chamber 17. Because the refrigerant contains lubricating oil, the upper key 31 of the cross ring 3 will be lubricated when the refrigerant is discharged to avoid wear and improve the service life of the compressor.

[0037] Since the oil supply passage 14 is located close to the end of the profile, the gas at this location is initially compressed, so the pressure difference between the pressure and the suction pressure is small, and the leakage is small, so it will not affect the performance of the compressor.

[0038] In some embodiments of the utility model, the first keyway 13 further has an air suction channel 15 connected to the air suction chamber 16, and the cross-sectional shape of the air suction channel 15 is the same as the cross-sectional area of ​​the oil supply channel 14. When the air suction channel 15 connects the air suction chamber 16 with the first keyway 13 and the movable scroll 2 moves, the refrigerant will enter the air suction chamber 16 through the air suction port and the air suction channel 15 (the fixed scroll 12 and the movable scroll 21 in the air suction chamber 16 are not yet meshed), and the refrigerant passing through the air suction channel 15 will lubricate the upper key 31 in the first keyway 13, further improving the lubrication effect of the cross ring 3.

[0039] In some embodiments of the present invention, in order to ensure the working efficiency of the compressor, the cross-sectional area of ​​the oil supply channel 14 is 1.13-3.14 square millimeters.

[0040] In some embodiments of the utility model, the oil supply channel 14 is arranged on the side wall of the first key groove 13, and the cross-sectional shape of the oil supply channel 14 is circular. In addition, the oil supply channel 14 can be arranged parallel to the horizontal plane or inclined to the horizontal plane. When the oil supply channel 14 is inclined to the horizontal plane, the height of the oil outlet of the oil supply channel 14 on the inner wall of the first key groove 13 is lower than the height of the oil inlet of the oil supply channel 14 in the compression chamber 17. The lubricating oil on the inner wall of the oil supply channel 14 will slide downward along the oil supply channel 14, causing the lubricating oil to gather, thereby improving the lubrication effect of the upper key 31.

[0041] In some embodiments of the present invention, the oil supply channel 14 may also be disposed at the bottom of the first keyway 13. In this case, the cross-sectional shape of the oil supply channel 14 is square. In addition, for ease of processing, the width of the oil supply channel 14 is at least 2 mm.

[0042] For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the utility model, which all fall within the protection scope of the utility model.

Claims

1. A scroll compressor cross ring lubrication structure, characterized in that: include: A stationary scroll (1), the stationary scroll (1) comprising a lower end plate (11) and a stationary scroll (12), the side wall of the lower end plate (11) comprising a first keyway (13); A movable scroll (2), wherein the movable scroll (2) has a movable scroll (21) matching the stationary scroll (12); A cross ring (3), wherein an upper key (31) of the cross ring (3) is slidably connected to a first key groove (13); wherein: The fixed scroll (12) and the movable scroll (21) form an air suction chamber (16) and a compression chamber (17), and the first key groove (13) has an oil supply passage (14) connected to the compression chamber (17).

2. The scroll compressor cross ring lubrication structure according to claim 1, characterized in that: The cross-sectional area of ​​the oil supply channel (14) is 1.13-3.14 square millimeters.

3. The scroll compressor cross ring lubrication structure according to claim 1, characterized in that: The oil supply channel (14) is arranged on the side wall of the first key groove (13).

4. The scroll compressor cross ring lubrication structure according to claim 3, characterized in that: The cross-sectional shape of the oil supply channel (14) is circular.

5. The scroll compressor cross ring lubrication structure according to claim 4, characterized in that: The oil supply channel (14) is arranged parallel to or inclined with respect to the horizontal plane.

6. The scroll compressor cross ring lubrication structure according to claim 1, characterized in that: The oil supply channel (14) is arranged at the bottom of the first key groove (13).

7. The scroll compressor cross ring lubrication structure according to claim 6, characterized in that: The cross-sectional shape of the oil supply channel (14) is square.

8. The scroll compressor cross ring lubrication structure according to claim 7, characterized in that: The width of the oil supply channel (14) is at least 2 mm.

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