Bearing mounting structure, compressor and air conditioner

Abstract

The application provides a bearing mounting structure, a compressor and an air conditioner. The bearing mounting structure comprises a mounting seat, a bearing and an anti-falling piece. The mounting seat is provided with a mounting cavity. The bearing is arranged in the mounting cavity. The anti-falling piece is arranged along the circumference of the bearing. The side, away from the bearing, of the anti-falling piece is arranged on the inner wall of the mounting cavity, so that the bearing is limited in the mounting cavity, the bearing can be prevented from falling out of the mounting cavity of the driven scroll, and the stable operation of the compressor is ensured.

Description

Technical Field

[0001] The present application belongs to the technical field of air conditioning, and specifically relates to a bearing mounting structure, a compressor and an air conditioner. Background Art

[0002] In order to achieve normal compression, existing scroll compressors must transmit the rotational motion of the drive shaft to the orbiting scroll, thereby driving the orbiting scroll to rotate around the fixed scroll. The connection between the drive shaft and the orbiting scroll must be achieved with the help of bearings. The existing technology all adopts the method of setting a bearing mounting cavity on the back of the orbiting scroll tooth to fix the bearing. In order to achieve better load-bearing operation, the existing technology usually adopts interference fitting to press the bearing into the bearing mounting cavity at the tail of the orbiting scroll. Since the bearing is one of the main load-bearing components and is located at the top of the drive shaft, it is affected by the crankshaft disturbance and assembly accuracy, and there is a tendency for the bearing to slip out of the mounting cavity at the tail of the orbiting scroll and fall off. In particular, for the orbiting scroll with a lightweight design, the material has different tendencies to deform under heat. The orbiting scroll deforms more under heat, resulting in a reduction in the interference connection preload between the bearing and the orbiting scroll, making the bearing more likely to slip out, affecting the normal operation of the compressor. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present application is to provide a bearing mounting structure, a compressor and an air conditioner, which can prevent the bearing from escaping from the mounting cavity of the movable scroll, thereby ensuring the stable operation of the compressor.

[0004] In order to solve the above problems, the present application provides a bearing mounting structure, including a mounting seat, a bearing and an anti-slip component, the mounting seat is provided with a mounting cavity, the bearing is arranged in the mounting cavity, the anti-slip component is arranged along the circumference of the bearing, and the anti-slip component is arranged on the inner wall of the mounting cavity away from the bearing so that the bearing is limited to the mounting cavity.

[0005] Preferably, the anti-slip component is cylindrical, the anti-slip component is sleeved on the bearing, and the anti-slip component is sleeved in the installation cavity.

[0006] Preferably, the thermal expansion coefficient of the anti-slip component is not less than the thermal expansion coefficient of the bearing, and not greater than the thermal expansion coefficient of the mounting seat.

[0007] Preferably, a first fixing hole is provided on the anti-slip component, a fixing component is passed through the first fixing hole, and the anti-slip component is fixed in the installation cavity through the fixing component.

[0008] Preferably, a second fixing hole is provided on the mounting seat, and the fixing member includes a first end and a second end, the first end extends into the second fixing hole, and the second end is provided on the circumferential outer wall of the bearing.

[0009] Preferably, the first fixing holes and the second fixing holes are multiple, the multiple first fixing holes are uniformly distributed on the sidewall of the anti-extraction piece in the circumferential direction, and the multiple second fixing holes are uniformly distributed on the sidewall of the mounting seat in the circumferential direction.

[0010] Preferably, the anti-extraction piece comprises a first opening located at one end of the anti-extraction piece away from the cavity bottom of the mounting cavity, and a stop flange is arranged at the first opening to prevent the bearing from being extracted from the first opening.

[0011] Preferably, the stop flange is annular, the outer diameter of the stop flange is not greater than the outer diameter of the anti-extraction piece, and the inner diameter of the stop flange is smaller than the outer diameter of the bearing.

[0012] Preferably, a notch is arranged on the anti-extraction piece, and the cross section of the anti-extraction piece is C-shaped.

[0013] Preferably, the anti-extraction piece and the mounting seat are integrally cast, or the anti-extraction piece and the mounting seat are in interference fit, or the anti-extraction piece and the mounting seat are in threaded fit, or the anti-extraction piece and the mounting seat are in riveting pressure fit.

[0014] In another aspect of the present application, a compressor comprising the bearing mounting structure is provided.

[0015] In another aspect of the present application, an air conditioner comprising the bearing mounting structure is provided.

[0016] Advantages

[0017] The bearing mounting structure provided in the embodiments of the present application can prevent the bearing from being extracted from the mounting cavity of the driving scroll, and ensure the stable operation of the compressor. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a sectional view of Embodiment 1 of the present application;

[0019] Figure 2 is a sectional view of Embodiment 2 of the present application;

[0020] Figure 3 is a sectional view of the driving scroll of Embodiment 2 of the present application;

[0021] Figure 4 is a perspective structural schematic view of the anti-extraction piece of Embodiment 2 of the present application;

[0022] Figure 5 is a sectional view of Embodiment 3 of the present application;

[0023] Figure 6 is a sectional view of the anti-extraction piece of Embodiment 3 of the present application;

[0024] Figure 7 is a sectional view of embodiment 4 of the present application;

[0025] Figure 8 is a perspective view of the anti-disengagement member of embodiment 4 of the present application.

[0026] The reference signs are as follows:

[0027] 1, orbiting scroll; 11, mounting seat; 111, second fixing hole; 2, anti-disengagement member; 21, first fixing hole; 22, fixing member; 23, stopper flange; 24, notch; 3, bearing. DETAILED DESCRIPTION

[0028] For reference Figure 1 As shown in the drawings, according to embodiment 1 of the present application, a bearing mounting structure includes a mounting seat 11, a bearing 3, and an anti-disengagement member 2. The mounting seat 11 is provided with a mounting cavity, the bearing 3 is arranged in the mounting cavity, and the anti-disengagement member 2 is arranged along the circumference of the bearing 3. The side of the anti-disengagement member 2 away from the bearing 3 is arranged on the inner wall of the mounting cavity, so that the bearing 3 is limited in the mounting cavity, which can effectively prevent the bearing 3 from disengaging from the mounting cavity of the orbiting scroll 1, and ensures the stable operation of the compressor.

[0029] Further, the bearing mounting structure can be arranged in the main body part requiring assembly of the bearing 3, such as the upper support and the lower support. In this embodiment, the orbiting scroll 1 is taken as an example.

[0030] The anti-disengagement member 2 is cylindrical, and is sleeved on the bearing 3 and in the mounting cavity. This ensures that the connection between the anti-disengagement member 2 and the bearing 3 is more secure.

[0031] Further, in this embodiment, the anti-disengagement member 2 is in interference fit with the bearing 3, and the anti-disengagement member 2 and the bearing 3 are coaxially arranged.

[0032] The thermal expansion coefficient of the anti-disengagement member 2 is not less than the thermal expansion coefficient of the bearing 3, and is not greater than the thermal expansion coefficient of the mounting seat 11.

[0033] Further, the anti-disengagement member 2 is made of a material whose thermal expansion coefficient is closer to that of the material of the bearing 3, which can ensure that the anti-disengagement member 2 and the bearing 3 have closer deformation, and still have safe and reliable assembly pre-tightening force in this case. Therefore, the assembly pre-tightening amount between the bearing 3 and the anti-disengagement member 2 can be smaller, which reduces the deformation of the bearing 3 caused by assembly and thus affects the normal clearance of the bearing 3. A larger pre-tightening amount can be used between the anti-disengagement member 2 and the bearing mounting seat 11, which prevents the bearing 3 from sliding out together with the anti-disengagement member 3 structure when being deformed by heat.

[0034] Furthermore, the bearing mounting structure provided in this embodiment has a better effect on the adoption of lightweight design. For example, the mounting seat 11 is made of aluminum alloy material, and the bearing 3 is made of bearing 3 steel material. The thermal deformation of the bearing 3 and the mounting seat 11 is quite different. After adopting this bearing mounting structure, the anti-slip effect is better than the existing technology.

[0035] The anti-slip member 2 and the mounting seat 11 are cast into an integral structure, or the anti-slip member 2 and the mounting seat 11 are interference fit, or threaded fit, or riveted fit.

[0036] Specifically, in this embodiment, the anti-dropping member 2 and the mounting seat 11 are cast into an integral structure, which can achieve a more reliable effect.

[0037] Example 2

[0038] like Figures 2-4 As shown, the difference from Example 1 is that a first fixing hole 21 is provided on the anti-slip component 2, and a fixing component 22 is passed through the first fixing hole 21. The anti-slip component 2 is fixed in the installation cavity by the fixing component 22. By providing the fixing component 22, the connection stability between the anti-slip component 2 and the mounting seat 11 is ensured.

[0039] Furthermore, one end of the fixing member 22 is arranged on the anti-slip member 2, and the other end is arranged on the mounting seat 11, that is, on the side wall of the mounting cavity.

[0040] Specifically, in this embodiment, a second fixing hole 111 is provided on the mounting seat 11, and the fixing member 22 includes a first end and a second end, the first end extends into the second fixing hole 111, and the second end is provided on the circumferential outer wall of the bearing 3, which can realize axial and circumferential limitation between the anti-slip member 2 of the bearing 3 and the mounting seat 11.

[0041] Furthermore, the first end of the fixing member 22 is located in the second fixing hole 111 and does not extend out of the outer wall of the second fixing hole 111 , and the second end passes through the first fixing hole 21 and contacts the outer wall of the bearing 3 .

[0042] Furthermore, the outer diameter of the fixing member 22 is substantially equal to the inner diameter of the first fixing hole 21 and the second fixing hole 111 . The fixing member 22 is a rivet. Since the riveting pressure is borne by the mounting portion of the bearing 3 , the bearing 3 will not be deformed.

[0043] There are multiple first fixing holes 21 and multiple second fixing holes 111. Multiple first fixing holes 21 are evenly distributed on the side wall of the anti-slip component 2 along the circumferential direction, and multiple second fixing holes 111 are evenly distributed on the side wall of the mounting seat 11 along the circumferential direction, which can ensure that the bearing 3, the anti-slip component 2 and the mounting seat 11 are evenly stressed, reducing the chance of damage.

[0044] Further, the first fixing holes 21 are located on the same circumferential surface.

[0045] It should be noted that the bearing 3 can be effectively fixed in the mounting cavity by the scheme in Embodiment 2, and the bearing can be prevented from being detached from the mounting cavity of the driven scroll plate, thereby ensuring the stable operation of the compressor. The requirement for the thermal expansion coefficient of the anti-detaching piece 2 in Embodiment 2 can be the same as that in Embodiment 1, that is, the thermal expansion coefficient of the anti-detaching piece 2 in this embodiment is not less than the thermal expansion coefficient of the bearing 3, and is not greater than the thermal expansion coefficient of the mounting seat 11, which can better achieve the fixation of the bearing 3 in the mounting cavity and ensure the stable operation of the compressor.

[0046] Embodiment 3

[0047] As shown in Figure 5 , 6 , the difference from Embodiment 2 is that the anti-detaching piece 2 comprises a first opening, the first opening is located at one end of the anti-detaching piece 2 away from the cavity bottom of the mounting cavity, and a stop flange 23 is arranged at the first opening to prevent the bearing 3 from being detached from the first opening. By arranging the stop flange 23, the bearing 3 can be further prevented from being detached from the anti-detaching piece 2.

[0048] Further, the bearing 3 located at the opposite end of the first opening is arranged in the opening, the bearing 3 located at the opposite end of the first opening is arranged in the anti-detaching piece 2, and the bearing 3 located at the opposite end of the first opening is arranged on the cavity bottom of the mounting cavity.

[0049] Further, the anti-detaching piece 2 is cylindrical, and the stop flange 23 extends inward from the edge of the first opening to the inside of the circumference of the first opening.

[0050] The stop flange 23 is annular, the outer diameter of the stop flange 23 is not greater than the outer diameter of the anti-detaching piece 2, and the inner diameter of the stop flange 23 is less than the outer diameter of the bearing 3, so as to prevent the bearing 3 from being detached from the first opening.

[0051] Further, by arranging the stop flange 23, a better assembly effect can be obtained, that is, the bearing 3 can be assembled into the anti-detaching piece 2 in transition or clearance, and the anti-detaching piece 2 can be assembled into the mounting hole seat in clearance or transition. The influence of interference assembly on the clearance of the bearing 3 can be avoided as much as possible, and the bearing 3 has good characteristics. At the same time, in order to prevent the bearing 3 from rotating when being assembled into the anti-detaching piece 2 in clearance, small holes can be arranged on the circumference corresponding to the circumference of the anti-detaching piece 2, and the fixing piece 22 is assembled on the bearing 3 to limit the rotation.

[0052] Embodiment 4

[0053] As shown in Figure 7 , 8As shown, different from example 3, the anti-extraction piece 2 is provided with a notch 24, and the cross section of the anti-extraction piece 2 is C-shaped. The notch 24 has a tendency to shrink and expand after the anti-extraction piece 2 is stressed. Therefore, the anti-extraction piece 2 provided with the notch 24 has better elastic deformation, whether the bearing 3 is assembled into the shaft by internal interference or the bearing 3 is pressed into the bearing seat by interference, because of the provision of the notch 24, it is ensured that both are elastic deformation. When the thermal deformation difference is large, causing the assembly gap to change, the anti-extraction piece 2 with elastic deformation can timely restore to always provide reliable pre-tightening force. In addition, another effect of opening the notch 24 on the anti-extraction piece 2 is to form an oil passage between the inner wall of the mounting seat 11 and the outer wall of the bearing 3, which connects the upper end and the lower end of the bearing 3 outside, accelerates the circulation of the upper oil passage of the bearing 3, and prevents the lubricating oil from stagnating in the upper part of the bearing 3 to reduce the lubrication effect.

[0054] Further, the anti-extraction piece 2 in example 3 is cylindrical, and in the present embodiment, the notch 24 is arranged along the generatrix direction of the cylindrical anti-extraction piece 2, that is, the cross section of the anti-extraction piece 2 is C-shaped.

[0055] In another aspect of the present embodiment, a compressor is provided, which comprises the bearing mounting structure described above.

[0056] In another aspect of the present embodiment, an air conditioner is provided, which comprises the bearing mounting structure described above.

[0057] The bearing mounting structure provided in the embodiments of the present application prevents the bearing 3 from being extracted from the mounting cavity of the driven scroll 1, and ensures the stable operation of the compressor.

[0058] It is easy for those skilled in the art to understand that the above advantageous modes can be freely combined and superimposed without conflict.

[0059] The above is only the preferred embodiment of the present application, and does not limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only the preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the present application.

Claims

1. A bearing mounting structure characterized by comprising: The bearing mounting structure comprises a mounting base (11), a bearing (3) and an anti-extraction piece (2), the mounting base (11) is provided with a mounting cavity, the bearing (3) is arranged in the mounting cavity, and the anti-extraction piece (2) is arranged along the circumference of the bearing (3); the side, away from the bearing (3), of the anti-extraction piece (2) is arranged on the inner wall of the mounting cavity, so that the bearing (3) is limited in the mounting cavity; The thermal expansion coefficient of the anti-extraction piece (2) is not less than the thermal expansion coefficient of the bearing (3) and not greater than the thermal expansion coefficient of the mounting base (11); The anti-extraction piece (2) is provided with a first fixing hole (21), a fixing piece (22) is arranged in the first fixing hole (21), and the anti-extraction piece (2) is fixed in the mounting cavity through the fixing piece (22); the mounting base (11) is provided with a second fixing hole (111), the fixing piece (22) comprises a first end and a second end, the first end extends into the second fixing hole (111), and the second end is arranged on the circumferential outer wall of the bearing (3); The anti-extraction piece (2) comprises a first opening, the first opening is located at one end of the anti-extraction piece (2) away from the cavity bottom of the mounting cavity, and a stop flange (23) is arranged at the first opening, so as to prevent the bearing (3) from being extracted from the first opening.

2. The bearing mounting structure according to claim 1, characterized by The anti-extraction piece (2) is cylindrical, the anti-extraction piece (2) is sleeved on the bearing (3), and the anti-extraction piece (2) is sleeved in the mounting cavity.

3. The bearing mounting structure according to claim 1, characterized by The first fixing hole (21) and the second fixing hole (111) are both a plurality of, a plurality of first fixing holes (21) are uniformly distributed on the side wall of the anti-extraction piece (2) in the circumferential direction, and a plurality of second fixing holes (111) are uniformly distributed on the side wall of the mounting base (11) in the circumferential direction.

4. The bearing mounting structure according to claim 1, characterized by The stop flange (23) is annular, the outer diameter of the stop flange (23) is not greater than the outer diameter of the anti-extraction piece (2), and the inner diameter of the stop flange (23) is smaller than the outer diameter of the bearing (3).

5. The bearing mounting structure according to claim 1, characterized by The anti-extraction piece (2) is provided with a notch (24), and the cross section of the anti-extraction piece (2) is C-shaped.

6. The bearing mounting structure according to claim 1, characterized by The anti-extraction piece (2) and the mounting base (11) are integrally cast, or the anti-extraction piece (2) and the mounting base (11) are in interference fit, or the anti-extraction piece (2) and the mounting base (11) are in threaded fit, or the anti-extraction piece (2) and the mounting base (11) are in riveting fit.

7. A compressor characterized by, The bearing mounting structure comprises a mounting base (11), a bearing (3) and an anti-extraction piece (2), the mounting base (11) is provided with a mounting cavity, the bearing (3) is arranged in the mounting cavity, and the anti-extraction piece (2) is arranged along the circumference of the bearing (3); the side, away from the bearing (3), of the anti-extraction piece (2) is arranged on the inner wall of the mounting cavity, so that the bearing (3) is limited in the mounting cavity; 8. An air conditioner characterized by comprising: The thermal expansion coefficient of the anti-extraction piece (2) is not less than the thermal expansion coefficient of the bearing (3) and not greater than the thermal expansion coefficient of the mounting base (11); The anti-extraction piece (2) is provided with a first fixing hole (21), a fixing piece (22) is arranged in the first fixing hole (21), and the anti-extraction piece (2) is fixed in the mounting cavity through the fixing piece (22); the mounting base (11) is provided with a second fixing hole (111), the fixing piece (22) comprises a first end and a second end, the first end extends into the second fixing hole (111), and the second end is arranged on the circumferential outer wall of the bearing (3); The anti-extraction piece (2) comprises a first opening, the first opening is located at one end of the anti-extraction piece (2) away from the cavity bottom of the mounting cavity, and a stop flange (23) is arranged at the first opening, so as to prevent the bearing (3) from being extracted from the first opening. The anti-extraction piece (2) is cylindrical, the anti-extraction piece (2) is sleeved on the bearing (3), and the anti-extraction piece (2) is sleeved in the mounting cavity. The first fixing hole (21) and the second fixing hole (111) are both a plurality of, a plurality of first fixing holes (21) are uniformly distributed on the side wall of the anti-extraction piece (2) in the circumferential direction, and a plurality of second fixing holes (111) are uniformly distributed on the side wall of the mounting base (11) in the circumferential direction. The stop flange (23) is annular, the outer diameter of the stop flange (23) is not greater than the outer diameter of the anti-extraction piece (2), and the inner diameter of the stop flange (23) is smaller than the outer diameter of the bearing (3). The anti-extraction piece (2) is provided with a notch (24), and the cross section of the anti-extraction piece (2) is C-shaped. The anti-extraction piece (2) and the mounting base (11) are integrally cast, or the anti-extraction piece (2) and the mounting base (11) are in interference fit, or the anti-extraction piece (2) and the mounting base (11) are in threaded fit, or the anti-extraction piece (2) and the mounting base (11) are in riveting fit. The bearing mounting structure comprises a mounting base (11), a bearing (3) and an anti-extraction piece (2), the mounting base (11) is provided with a mounting cavity, the bearing (3) is arranged in the mounting cavity, and the anti-extraction piece (2) is arranged along the circumference of the bearing (3); the side, away from the bearing (3), of the anti-extraction piece (2) is arranged on the inner wall of the mounting cavity, so that the bearing (3) is limited in the mounting cavity;

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