Bearing assemblies, compressors and air conditioners that spray liquid on both sides of the bearing

Abstract

This invention relates to a bearing assembly, a compressor, and an air conditioner that spray lubricant onto both sides of a bearing. The bearing assembly includes: a bearing; two spray nozzles, respectively disposed on both sides of the bearing, for spraying lubricant onto the bearing; and a collection member disposed between the two spray nozzles for collecting the lubricant sprayed by the two spray nozzles. The two spray nozzles of this invention, respectively disposed on both sides of the bearing, spray lubricant onto both sides of the bearing, facilitating the supply of sufficient lubricant to the bearing and removing heat generated during bearing operation. Finally, the lubricant is collected and led out by the collection member.

Description

Technical Field

[0001] The invention relates to the field of compressors, and in particular to a bearing assembly, a compressor and an air conditioner for spraying liquid to both sides of a bearing. Background Art

[0002] Centrifugal refrigeration compressors are speed-type compressors. The compressor rotor rotates at high speed during operation, and bearings are required to support the rotor. Heat is generated during operation, so lubrication and cooling are required. Commonly used bearing structures include oil-lubricated bearings.

[0003] Oil-lubricated bearings are widely used at this stage due to their significant advantages such as low cost, simple structure, and high reliability. However, the oil and refrigerant in the unit cannot be completely isolated. During operation, the lubricating oil will leak into the refrigeration system, requiring additional purification equipment to purify the refrigerant and recover the lubricating oil. The lubricating oil mixed in the refrigerant has a great impact on the heat exchange performance of the refrigerant. Furthermore, the related technology cannot provide enough lubricating oil for the bearings, resulting in insufficient lubrication of the bearings. Summary of the invention

[0004] One of the purposes of the present invention is to provide a bearing assembly, a compressor and an air conditioner that spray liquid to both sides of the bearing, so as to alleviate the problem of insufficient lubricating oil provided to the bearing.

[0005] Some embodiments of the present invention provide a bearing assembly, which includes: a bearing; two spray parts, respectively arranged on both sides of the bearing, for spraying lubricating liquid onto the bearing; and a collecting part, arranged between the two spray parts, for collecting the lubricating liquid sprayed by the two spray parts.

[0006] In some embodiments, the liquid spraying member includes: an annular body; an annular groove provided in the annular body for storing lubricating liquid; and at least one liquid spraying channel connected to the annular groove for guiding the lubricating liquid in the annular groove to the bearing.

[0007] In some embodiments, the liquid spraying member further includes: an intermediate channel, and each of the liquid spraying channels is connected to the annular groove via a corresponding intermediate channel.

[0008] In some embodiments, the cross-sectional area of ​​the intermediate channel is larger than the cross-sectional area of ​​the corresponding liquid injection channel.

[0009] In some embodiments, the volume of the annular groove is greater than the sum of the volumes of all the intermediate channels and all the liquid injection channels.

[0010] In some embodiments, liquid spray channels are centrally arranged at some parts of the annular body, or liquid spray channels are arranged at intervals along the entire circumference of the annular body.

[0011] In some embodiments, 4 to 8 liquid spraying channels are provided along the circumference of the annular body.

[0012] In some embodiments, the central axis of the liquid spraying channel is parallel to the central axis of the liquid spraying member or has a preset angle greater than zero.

[0013] In some embodiments, a groove is provided on a side of the liquid spraying member adjacent to the bearing, and the outlet end of the liquid spraying channel is located in the groove, so that a preset distance exists between the outlet end of the liquid spraying channel and the bearing.

[0014] In some embodiments, the collecting member includes: an inner ring body; an outer ring body, forming a collecting chamber between the outer ring body and the inner ring body, the collecting chamber being used to collect the lubricating liquid sprayed by the two spraying members; and a liquid outlet, which is provided on the outer ring body and connected to the collecting chamber, and is used to draw out the lubricating liquid in the collecting chamber.

[0015] In some embodiments, the bearing assembly includes a bearing support, which is arranged on the outer periphery of the bearing, the spray component and the collecting component. The bearing support is provided with a liquid inlet channel, and the liquid inlet channel is used to provide lubricating liquid to the spray component.

[0016] In some embodiments, the bearing assembly includes a bearing support, the bearing support is provided with a liquid inlet channel, the liquid inlet channel is used to provide lubricating liquid to the spray element; the cross-sectional area of ​​the liquid inlet channel is greater than the sum of the cross-sectional areas of all the intermediate channels; and / or the cross-sectional width of the liquid inlet channel is smaller than the cross-sectional width of the annular groove.

[0017] In some embodiments, the bearing assembly includes two bearings, the two bearings are disposed between the two liquid spraying members, and the collecting member is disposed between the two bearings.

[0018] In some embodiments, the bearing comprises a rolling bearing or a sliding bearing.

[0019] Some embodiments of the present invention provide a compressor, which includes the bearing assembly in the above embodiment, and the lubricating fluid in the bearing assembly is the liquid refrigerant in the refrigeration cycle system in which the compressor is located.

[0020] In some embodiments, the compressor includes a rotating shaft, and the bearing, the two liquid spraying parts and the collecting part are arranged on the circumference of the rotating shaft.

[0021] In some embodiments, the compressor comprises a centrifugal refrigeration compressor or a screw refrigeration compressor.

[0022] Some embodiments of the present invention provide an air conditioner comprising the above-mentioned compressor.

[0023] Based on the above technical solution, the present invention has at least the following beneficial effects:

[0024] In some embodiments, two spray parts are respectively arranged on both sides of the bearing to spray lubricating liquid on both sides of the bearing, so as to provide sufficient lubricating liquid for the bearing and take away the heat generated by the bearing during operation. Finally, the lubricating liquid is collected and discharged through the collecting part. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 A schematic diagram of a bearing assembly provided for some embodiments of the present invention;

[0027] Figure 2 A schematic front view of a liquid spraying member provided in some embodiments of the present invention;

[0028] Figure 3 A schematic cross-sectional view of a liquid spraying member provided in some embodiments of the present invention;

[0029] Figure 4 A schematic front view of an outer ring body of a collecting member provided in some embodiments of the present invention;

[0030] Figure 5 A schematic cross-sectional view of the outer ring body of a collecting member provided in some embodiments of the present invention.

[0031] Description of the reference numerals in the accompanying drawings:

[0032] 1-Bearing;

[0033] 2-liquid spraying member; 21-annular body; 22-annular groove; 23-liquid spraying channel; 24-middle channel; 25-groove;

[0034] 3-collecting member; 31-inner ring body; 32-outer ring body; 33-collecting chamber; 34-liquid outlet;

[0035] 4-bearing support; 41-liquid inlet channel; 42-liquid outlet channel;

[0036] 5- Rotating axis. DETAILED DESCRIPTION

[0037] The technical scheme in the embodiment will be described clearly and completely below in conjunction with the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0039] The inventor has found through research that the liquid refrigerant has a certain viscosity, that is, the liquid refrigerant can be used as a lubricant to lubricate the bearing 1 .

[0040] The lubricating liquid in the bearing assembly provided by the present disclosure may be a liquid refrigerant.

[0041] like Figure 1 , which is a schematic diagram of a bearing assembly provided in some embodiments.

[0042] In some embodiments, a bearing assembly includes a bearing 1 .

[0043] In some embodiments, the bearing 1 comprises a sliding bearing or a rolling bearing. Since the viscosity of the refrigerant is relatively small, a rolling bearing is preferably used.

[0044] In some embodiments, the bearing assembly includes two liquid spraying members 2. The two liquid spraying members 2 are respectively arranged on both sides of the bearing 1, and are used to spray lubricating liquid to the bearing 1.

[0045] In some embodiments, the bearing assembly includes a collecting member 3 , which is disposed between the two spraying members 2 and is used to collect the lubricating liquid sprayed by the two spraying members 2 .

[0046] In some embodiments, two spraying parts 2 are respectively arranged on both sides of the bearing 1 to provide sufficient lubricating liquid for the bearing 1 and to take away the heat generated by the bearing 1 during operation. Finally, the lubricating liquid is collected and discharged through the collecting part 3.

[0047] In some embodiments, Figure 2 , Figure 3 As shown, the liquid spraying member 2 includes an annular body 21. The annular body 21 is used to be sleeved on the rotating shaft 5.

[0048] In some embodiments, the liquid spraying member 2 includes an annular groove 22 , which is disposed on the annular body 21 and is used to store lubricating liquid.

[0049] In some embodiments, the liquid spraying member 2 includes at least one liquid spraying channel 23 , and each liquid spraying channel 23 is connected to the annular groove 22 for guiding the lubricating liquid in the annular groove 22 to the bearing 1 .

[0050] In some embodiments, a groove 25 is provided on one side of the liquid spraying member 2 adjacent to the bearing 1 , and the outlet end of the liquid spraying channel 23 is located in the groove 25 , so that there is a preset distance between the outlet end of the liquid spraying channel 23 and the bearing 1 .

[0051] The groove 25 is provided to ensure the distance between the outlet end of the liquid spray channel 23 and the bearing 1 . The distance between the outlet end of the liquid spray channel 23 and the bearing 1 should not be too small so that the refrigerant can smoothly enter the bearing 1 .

[0052] In some embodiments, the lubricating liquid introduced from the outside first enters the annular groove 22 of the spray member 2, and then is sprayed onto the bearing 1 through the spray channel 23 circumferentially arranged on the spray member 2, so as to provide sufficient lubricating liquid for the bearing 1 and take away the heat generated by the bearing 1 during operation.

[0053] Furthermore, the refrigerant sprayed by the two liquid spraying parts 2 is collected in time by the collecting part 3, so that the refrigerant sprayed by the two liquid spraying parts 2 can flow out smoothly.

[0054] In some embodiments, the liquid spraying member 2 further includes an intermediate channel 24, and each liquid spraying channel 23 is connected to the annular groove 22 via a corresponding intermediate channel 24. That is, the intermediate channels 24 on the liquid spraying member 2 need to correspond to the liquid spraying channels 23 one by one.

[0055] In some embodiments, the cross-sectional area of ​​the intermediate channel 24 is larger than the cross-sectional area of ​​the corresponding liquid injection channel 23 .

[0056] Furthermore, the cross-sectional area of ​​each liquid spraying channel 23 on a single liquid spraying member 2 or two liquid spraying members 2 is smaller than the cross-sectional area of ​​the corresponding intermediate channel 24 .

[0057] In some embodiments, the volume of the annular groove 22 is greater than the sum of the volumes of all the intermediate channels 24 and all the spray channels 23 .

[0058] In some embodiments, at least part of the annular body 21 is centrally provided with the liquid spraying channel 23. Optionally, the liquid spraying channel 23 is centrally provided in the upper half or the lower half of the annular body 21.

[0059] In some embodiments, the entire circumference of the annular body 21 is provided with liquid injection channels 23 at intervals. That is, the entire circumference of the annular body 21 is provided with liquid injection channels 23.

[0060] The number of the liquid spraying channels 23 on the liquid spraying member 2 should not be too many or too few. Too few will result in poor lubrication effect, while too many will increase the processing difficulty, waste man-hours, and cause waste of processing costs.

[0061] Optionally, 4 to 8 liquid spraying channels 23 are provided along the annular body 21 .

[0062] In some embodiments, the central axis of the liquid spraying channel 23 is parallel to the central axis of the liquid spraying member 2 or has a preset angle greater than zero.

[0063] Optionally, the center axis of the outlet end of the liquid spray channel 23 may be perpendicular to the end surface of the liquid spray member 2 , or may be inclined at a certain angle, but it is necessary to ensure that the sprayed liquid can smoothly enter the bearing 1 .

[0064] In some embodiments, a nozzle may be provided at the outlet end of the liquid spraying channel 23. The nozzle is perpendicular to the liquid spraying member 2 or has an angle with the liquid spraying member 2 that is less than 90 degrees.

[0065] In some embodiments, the collecting member 3 includes an inner ring 31. The inner ring 31 is used to be sleeved on the rotating shaft 5.

[0066] In some embodiments, Figure 1 , Figure 4 As shown, the collecting member 3 includes an outer ring body 32 , and a collecting chamber 33 is formed between the outer ring body 32 and the inner ring body 31 . The collecting chamber 33 is used to collect the lubricating liquid sprayed by the two spraying members 2 .

[0067] In some embodiments, Figure 5 As shown, the collecting member 3 includes a liquid outlet 34 , which is disposed on the outer ring body 32 and communicates with the collecting chamber 33 , and is used to lead out the lubricating liquid in the collecting chamber 33 .

[0068] In some embodiments, the lubricating liquid is sprayed from the spraying member 2 , passes through the bearing 1 , enters the collecting chamber 33 of the collecting member 3 , and flows out through the liquid outlet 34 .

[0069] In some embodiments, the bearing assembly includes a bearing support 4, which is arranged on the outer periphery of the bearing 1, the spray component 2 and the collecting component 3. The bearing support 4 is provided with a liquid inlet channel 41, which is used to provide lubricating liquid to the spray component 2.

[0070] In some embodiments, the lubricating liquid enters the annular grooves 22 of the two spray members 2 through the liquid inlet channel 41 on the bearing support 4, and then enters the spray channel 23 through the intermediate channels 24 evenly distributed around the two spray members 2, and is sprayed out through the outlet ends of the spray channels 23 on both sides of the bearing 1, enters the interior of the bearing 1, lubricates the bearing 1, and takes away the heat generated by the bearing 1; the lubricating liquid after lubrication flows out of the bearing 1, enters the collection chamber 33 of the collecting member 3, and finally flows out through the liquid outlet 34 of the collecting member 3.

[0071] In some embodiments, the bearing assembly includes a bearing support 4 , on which a liquid inlet channel 41 is provided. The liquid inlet channel 41 is used to provide lubricating liquid to the liquid spraying member 2 .

[0072] In some embodiments, two liquid inlet channels 41 are provided on the bearing support 4 , and each liquid inlet channel 41 is correspondingly connected to an annular groove 21 on the liquid spraying member 2 .

[0073] In some embodiments, the cross-sectional area of ​​the liquid inlet channel 41 is greater than the sum of the cross-sectional areas of all the intermediate channels 24 on the liquid spraying member 2 connected thereto.

[0074] In some embodiments, the cross-sectional width of the liquid inlet channel 41 is smaller than the cross-sectional width of the annular groove 22 on the liquid spraying member 2 connected thereto.

[0075] In some embodiments, the cross-sectional area of ​​the liquid inlet channel 41 on the bearing support 4 is larger than the sum of the cross-sectional areas of all the intermediate channels 24 on the spray component 2 connected thereto, but the cross-sectional width of the liquid inlet channel 41 is smaller than the cross-sectional width of the annular groove 22 on the spray component 2 connected thereto.

[0076] In some embodiments, the bearing support 4 is further provided with a liquid outlet channel 42 , which is connected to the liquid outlet 34 provided on the outer ring body 32 , and is used to lead out the lubricating liquid collected in the collecting member 3 .

[0077] In some embodiments, the bearing assembly includes two bearings 1 , the two bearings 1 are disposed between two liquid spraying members 2 , and the collecting member 3 is disposed between the two bearings 1 .

[0078] Optionally, at each bearing support position, the bearing 1 may be a single bearing 1 , or two bearings 1 may be arranged between two spraying members 2 .

[0079] In some embodiments, the bearing 1 comprises a rolling bearing or a sliding bearing.

[0080] Some embodiments provide a compressor including the above-mentioned bearing assembly.

[0081] In some embodiments, the lubricating fluid in the bearing assembly is liquid refrigerant in the refrigeration cycle system where the compressor is located, so as to avoid mixing lubricating oil into the refrigerant.

[0082] In some embodiments, liquid refrigerant with lubricating properties enters from the liquid inlet channel 41 on the bearing support 4 arranged on the circumference of the bearing 1, enters the corresponding spray parts 2, and then enters the bearing 1 through the intermediate channel 24 and the spray channel 23 in the spray part 2 to lubricate the bearing 1. After passing through the bearing 1, the liquid refrigerant enters the collection chamber 33 of the intermediate collecting part 3 and takes away the heat generated during the rotation of the bearing 1. After being collected in the collection chamber 33, the liquid refrigerant flows out through the liquid outlet 34 on the outer ring body 32.

[0083] In some embodiments, the compressor includes a rotating shaft 5 , a bearing 1 , two liquid spraying parts 2 , and a collecting part 3 which are arranged in the circumference of the rotating shaft 5 .

[0084] Since the rotating shaft 5 is a rotating element and the liquid spraying member 2 is a fixed element, the inner diameter of the liquid spraying member 2 needs to be larger than the outer diameter of the rotating shaft 5 .

[0085] Optionally, the gap between the inner wall of the through hole of the annular body 21 of the liquid spraying member 2 and the rotating shaft 5 needs to be greater than 1 mm to 2 mm to avoid interference between the liquid spraying member 2 and the rotating shaft 5 due to cumulative errors.

[0086] In some embodiments, the compressor includes a rotating machine with liquid refrigerant in a unit such as a centrifugal refrigeration compressor or a screw refrigeration compressor.

[0087] Some embodiments provide an air conditioner, which includes the above-mentioned compressor.

[0088] In the description of the present invention, it should be understood that the use of terms such as "first", "second", and "third" to limit components is only for the convenience of distinguishing the above components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A bearing assembly, characterized in that: include: Bearing (1); Two liquid spraying parts (2), respectively arranged on both sides of the bearing (1), and used for spraying lubricating liquid onto the bearing (1); as well as, A collecting member (3) is disposed between the two liquid spraying members (2) and is used to collect the lubricating liquid sprayed by the two liquid spraying members (2); The liquid spraying member (2) comprises: Ring body (21); an annular groove (22), provided on the annular body (21), and used for storing lubricating liquid; and at least one liquid spray channel (23), connected to the annular groove (22), and used for directing lubricating liquid in the annular groove (22) toward the bearing (1); The bearing assembly comprises two bearings (1), the two bearings (1) are arranged between the two liquid spraying parts (2), and the collecting part (3) is arranged between the two bearings (1).

2. The bearing assembly according to claim 1, characterized in that The liquid spraying member (2) further comprises an intermediate channel (24), and each of the liquid spraying channels (23) is connected to the annular groove (22) via a corresponding intermediate channel (24).

3. The bearing assembly according to claim 2, characterized in that The cross-sectional area of ​​the intermediate channel (24) is greater than the cross-sectional area of ​​the corresponding liquid injection channel (23).

4. The bearing assembly according to claim 2, wherein: The volume of the annular groove (22) is greater than the sum of the volumes of all the intermediate channels (24) and all the liquid injection channels (23).

5. The bearing assembly according to claim 1, wherein: Liquid spray channels (23) are centrally arranged at certain parts of the annular body (21), or liquid spray channels (23) are arranged at intervals along the entire circumference of the annular body (21).

6. The bearing assembly according to claim 1, wherein: Four to eight liquid spraying channels (23) are provided along the circumference of the annular body (21).

7. The bearing assembly according to claim 1, wherein: The central axis of the liquid spraying channel (23) is parallel to the central axis of the liquid spraying member (2) or has a preset angle greater than zero.

8. The bearing assembly according to claim 1, wherein: A groove (25) is provided on a side of the liquid spraying member (2) adjacent to the bearing (1), and an outlet end of the liquid spraying channel (23) is located in the groove (25), so that a preset distance exists between the outlet end of the liquid spraying channel (23) and the bearing (1).

9. The bearing assembly according to claim 1, wherein: The collecting element (3) comprises: Inner ring body (31); An outer ring body (32) forms a collecting chamber (33) with the inner ring body (31), wherein the collecting chamber (33) is used to collect the lubricating liquid sprayed by the two liquid spraying members (2); and A liquid outlet (34) is provided on the outer ring body (32) and is connected to the collecting chamber (33), and is used for leading out the lubricating liquid in the collecting chamber (33).

10. The bearing assembly according to claim 1, wherein: The invention comprises a bearing support (4) arranged on the outer periphery of the bearing (1), the liquid spraying member (2) and the collecting member (3); the bearing support (4) is provided with a liquid inlet channel (41), and the liquid inlet channel (41) is used to supply lubricating liquid to the liquid spraying member (2).

11. The bearing assembly according to claim 2, wherein: The invention comprises a bearing support (4), wherein a liquid inlet channel (41) is provided on the bearing support (4), and the liquid inlet channel (41) is used to provide lubricating liquid to the liquid spraying member (2); the cross-sectional area of ​​the liquid inlet channel (41) is greater than the sum of the cross-sectional areas of all the intermediate channels (24) on the liquid spraying member (2) connected thereto; and / or the cross-sectional width of the liquid inlet channel (41) is less than the cross-sectional width of the annular groove (22) on the liquid spraying member (2) connected thereto.

12. The bearing assembly according to claim 1, wherein: The bearing (1) comprises a rolling bearing or a sliding bearing.

13. A compressor, characterized in that: It comprises a bearing assembly as described in any one of claims 1 to 12, wherein the lubricating fluid in the bearing assembly is a liquid refrigerant in a refrigeration cycle system where the compressor is located.

14. The compressor according to claim 13, characterized in that It comprises a rotating shaft (5), the bearing (1), the two liquid spraying parts (2) and the collecting part (3) being arranged in the circumferential direction of the rotating shaft (5).

15. The compressor according to claim 13, characterized in that The compressor comprises a centrifugal refrigeration compressor or a screw refrigeration compressor.

16. An air conditioner, characterized in that: Comprising a compressor as described in any one of claims 13 to 15.

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