Movable scroll plate, scroll plate assembly, scroll compressor and air conditioner

Abstract

The utility model provides a orbiting scroll, scroll subassembly, scroll compressor and air conditioner, orbiting scroll includes: orbiting scroll body and scroll, orbiting scroll body first end face is provided with a plurality of oil storage hole, the oil storage hole is used for storing lubricating oil, orbiting scroll body is connected mutually, the scroll is arranged on the first end face. Due to the fact that the oil storage holes are filled with oil, mixed friction between the first end face and the static scroll plate is improved into fluid dynamic pressure lubrication, the friction coefficient between the movable scroll plate and the static scroll plate is greatly reduced, and abrasion of the movable scroll plate and the static scroll plate is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of movable scrolls, and in particular to a movable scroll, a scroll assembly, a scroll compressor and an air conditioner. Background Art

[0002] The scroll compressor includes a moving scroll and a stationary scroll for compressing the working fluid. The moving scroll is driven by the crankshaft and the eccentric crank pin to achieve orbital and translational motion. The moving scroll floats axially under the action of back pressure and fits into the end face of the stationary scroll to form a closed crescent-shaped cavity.

[0003] Under the action of back pressure, the end faces of the moving and static plates come into contact with each other and generate large mechanical friction, which leads to large wear problems. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] In view of this, the present invention proposes a movable scroll, comprising: a movable scroll body, a first end face of which is provided with a plurality of oil storage holes for storing lubricating oil; a scroll connected to the movable scroll body, the scroll being provided on the first end face.

[0006] The scroll is arranged on the first end face of the movable scroll body. The scroll needs to cooperate with the fixed scroll to form a compression chamber, so the first end face faces the fixed scroll. When the movable scroll and the fixed scroll cooperate, a part of the fixed scroll will rest against the first end face. Under the drive of the crankshaft, a planar friction pair is formed between the first end face of the movable scroll and the fixed scroll.

[0007] A plurality of oil storage holes are provided on the first end face, in which oil can be stored. By utilizing the non-compressible property of the liquid, the oil supports and carries the static scroll. Furthermore, since the oil is filled in the oil storage holes, the planar friction pair between the first end face and the static scroll is improved from mixed friction to fluid dynamic pressure lubrication, which greatly reduces the friction coefficient between the orbiting scroll and the static scroll, reduces the wear of the orbiting scroll and the static scroll, and is beneficial to improving the reliability of the orbiting scroll and the static scroll.

[0008] In addition, the movable scroll in the above technical solution provided by the present invention may also have the following additional technical features:

[0009] In some technical solutions, optionally, among the multiple oil storage holes, two adjacent oil storage holes are arranged at intervals.

[0010] When two adjacent oil storage holes are spaced apart, a solid structure of the movable scroll body is provided between the two adjacent oil storage holes. By doing so, the structural stability of the movable scroll body can be ensured, and the structural strength of the movable scroll body can be prevented from being affected by the arrangement of the oil storage holes being too dense.

[0011] In some technical solutions, optionally, along the first direction, the maximum width W of the oil storage hole satisfies the following condition: 1 mm ≤ W ≤ 1.5 mm, and the first direction is perpendicular to the thickness direction of the orbiting scroll body.

[0012] When the width of the oil reservoir is too small, the oil storage space is small, so that only a small amount of oil can be stored in the oil reservoir, which makes it difficult to achieve effective lubrication. When the width of the oil reservoir is too large, the oil in the oil reservoir is easy to flow out of the oil reservoir, resulting in oil loss.

[0013] In this solution, the maximum width W of the oil reservoirs satisfies the requirement of 1 mm ≤ W ≤ 1.5 mm. Within this range, the oil reservoirs provide sufficient storage space, allowing the oil within the multiple reservoirs to effectively lubricate the oil. Furthermore, the maximum width of the oil reservoirs is not excessively large, preventing oil from flowing out of the reservoirs under air pressure, thereby preventing oil loss.

[0014] In some technical solutions, optionally, the depth H of the oil storage hole satisfies the following condition: 3 μm≤H≤8 μm.

[0015] When the depth of the oil reservoir is too small, the oil storage space is small, so that only a small amount of oil can be stored in the oil reservoir, which makes it difficult to achieve effective lubrication. When the depth of the oil reservoir is too large, the deep oil reservoir will reduce the structural stability of the orbiting scroll body.

[0016] In this solution, the depth H of the oil reservoir holes satisfies 3μm ≤ H ≤ 8μm. Within this range, the oil reservoir holes provide sufficient oil storage space, allowing the oil in the multiple oil reservoir holes to effectively lubricate. Furthermore, the depth of the oil reservoir holes should not be too large, thereby avoiding damage to the structural stability of the orbiting scroll body and ensuring sufficient structural strength of the orbiting scroll body.

[0017] In some technical solutions, optionally, the distance D between the center lines of two adjacent oil storage holes satisfies the following condition: 1 mm < D ≤ 3 mm.

[0018] The oil reservoirs have a centerline. When the centerline spacing between adjacent oil reservoirs is too large, the spacing between the two adjacent oil reservoirs is large, resulting in a large amount of space on the first end surface not covered by the oil reservoirs. This makes it difficult for the multiple oil reservoirs to provide sufficient oil for lubrication. When the centerline spacing between adjacent oil reservoirs is too small, the spacing between each oil reservoir is too small, resulting in an excessively dense distribution of the oil reservoirs and increasing the difficulty of creating multiple oil reservoirs.

[0019] In this solution, the centerline spacing D between two adjacent oil storage holes is limited to 1mm<D≤3mm, which can ensure that oil storage holes are provided on part of the space on the first end face, thereby providing sufficient oil for lubrication, and can also avoid the density of multiple oil storage holes being too high, thereby reducing the difficulty of opening multiple oil storage holes.

[0020] In some technical solutions, optionally, a plurality of oil storage groups are provided on the movable scroll body, and the plurality of oil storage groups are concentrically distributed; the oil storage group includes a plurality of oil storage holes, and the plurality of oil storage holes in an oil storage group are distributed at intervals along the circumference of the movable scroll body.

[0021] The multiple oil reservoirs are divided into multiple oil reservoir groups. The oil reservoirs in each group are distributed along the circumference of the orbiting scroll body. The multiple oil reservoir groups are arranged in a circular pattern centered on the axis of the orbiting scroll body, thereby forming an array of multiple oil reservoirs on the first end surface. This improves the uniformity of the distribution of the multiple oil reservoirs, facilitates the opening of the multiple oil reservoirs on the first end surface, and reduces interference between adjacent oil reservoirs.

[0022] In some technical solutions, optionally, the inner side wall of the oil storage hole extends along the thickness direction of the orbiting scroll body; or the inner side wall of the oil storage hole and the thickness direction of the orbiting scroll body form an angle α, α≤10°.

[0023] When the inner wall of the oil storage hole extends along the thickness direction of the movable scroll body, the opening area of ​​the oil storage hole is the same as the bottom wall area of ​​the oil storage hole. The oil storage hole is straight cylindrical, so that the oil storage hole has a larger oil storage space.

[0024] Alternatively, the inner wall of the oil storage hole is inclined relative to the thickness direction of the movable scroll body, and the inclination angle is less than 10°. The oil storage hole has a structure that is wide at the top and narrow at the bottom, but due to the small inclination angle, the oil storage hole still has a large oil storage space.

[0025] In a second aspect, the present invention provides a scroll assembly, comprising: a fixed scroll; and, like the orbiting scroll in the first aspect, a portion of the fixed scroll rests against the first end surface.

[0026] In a third aspect, the present invention provides a scroll compressor, comprising: a scroll assembly as in the second aspect.

[0027] In a fourth aspect, the present invention provides an air conditioner, comprising: a scroll compressor as in the third aspect.

[0028] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 The structure diagram of the movable scroll in the embodiment of the present utility model is shown;

[0031] Figure 2 The structure diagram of the movable scroll in the embodiment of the present utility model is shown;

[0032] Figure 3 A partial schematic diagram of the movable scroll in an embodiment of the present utility model is shown;

[0033] Figure 4 A schematic diagram showing the distribution of multiple oil storage holes in an embodiment of the present utility model is shown;

[0034] Figure 5 The schematic diagram of the structure of the oil storage hole in the embodiment of the present utility model is shown;

[0035] Figure 6 The schematic diagram of the structure of the oil storage hole in the embodiment of the present utility model is shown;

[0036] Figure 7 The structure diagram of the scroll compressor in the embodiment of the present utility model is shown.

[0037] Reference numerals:

[0038] 100 orbiting scroll, 110 orbiting scroll body, 111 first end surface, 112 oil storage hole, 113 inner side wall, 114 bottom wall, 120 scroll, 130 oil storage group, 200 fixed scroll, 300 cross ring, 400 main frame, 500 crankshaft, 600 scroll assembly, 700 scroll compressor. DETAILED DESCRIPTION

[0039] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0041] Refer to the following Figures 1 to 7 The present invention provides a movable scroll, a scroll assembly, a scroll compressor, and an air conditioner according to some embodiments of the present invention.

[0042] Combine Figure 1 、 Figure 2 and Figure 3 As shown, in some embodiments of the present invention, a movable scroll 100 is proposed, including: a movable scroll body 110 and a scroll 120, a first end surface 111 of the movable scroll body 110 is provided with a plurality of oil storage holes 112, the oil storage holes 112 are used to store lubricating oil, the scroll 120 is connected to the movable scroll body 110, and the scroll 120 is provided on the first end surface 111.

[0043] The scroll 120 is arranged on the first end face 111 in the movable scroll body 110. The scroll 120 needs to cooperate with the fixed scroll 200 to form a compression chamber. Therefore, the first end face 111 faces the fixed scroll 200. When the movable scroll 100 and the fixed scroll 200 cooperate, a part of the fixed scroll 200 will rest on the first end face 111. Under the drive of the crankshaft, a planar friction pair is formed between the first end face 111 and the fixed scroll 200.

[0044] A plurality of oil storage holes 112 are provided on the first end face 111, and oil can be stored in the oil storage holes 112. By utilizing the non-compressible property of the liquid, the oil supports and carries the static scroll 200. In addition, since the oil is filled in the oil storage holes 112, the planar friction pair between the first end face 111 and the static scroll 200 is improved from mixed friction to fluid dynamic pressure lubrication, which greatly reduces the friction coefficient between the movable scroll 100 and the static scroll 200, reduces the wear of the movable scroll 100 and the static scroll 200, and is conducive to improving the reliability of the movable scroll 100 and the static scroll 200.

[0045] like Figure 3 As shown, in some embodiments, optionally, among the multiple oil storage holes 112, two adjacent oil storage holes 112 are arranged at intervals.

[0046] When two adjacent oil storage holes 112 are spaced apart, a solid structure of the orbiting scroll body 110 is present between the two adjacent oil storage holes 112 . This ensures the structural stability of the orbiting scroll body 110 and prevents the oil storage holes 112 from being arranged too densely, which would affect the structural strength of the orbiting scroll body 110 .

[0047] Combine Figure 3 and Figure 4 As shown, in some embodiments, optionally, along the first direction L1 , the maximum width W of the oil storage hole 112 satisfies the following condition: 1 mm ≤ W ≤ 1.5 mm, and the first direction L1 is perpendicular to the thickness direction L2 of the orbiting scroll body 110 .

[0048] When the width of the oil reservoir 112 is too small, the oil storage space of the oil reservoir 112 is small, so that only a small amount of oil can be stored in the oil reservoir 112, which makes it difficult to achieve effective lubrication. When the width of the oil reservoir 112 is too large, the oil in the oil reservoir 112 is easy to flow out of the oil reservoir 112, resulting in oil loss.

[0049] In this embodiment, the maximum width W of the oil reservoir holes 112 satisfies 1mm≤W≤1.5mm. Within this range, the oil reservoir holes 112 have sufficient oil storage space, allowing the oil in the multiple oil reservoir holes 112 to effectively lubricate. Furthermore, the maximum width of the oil reservoir holes 112 is not excessively large, which prevents oil from flowing out of the oil reservoir holes 112 under the influence of air pressure, thereby preventing oil loss.

[0050] Illustratively, W may be 1 mm, 1.2 mm, or 1.5 mm.

[0051] Combine Figure 3 and Figure 5 As shown, in some embodiments, optionally, the depth H of the oil storage hole 112 satisfies the following condition: 3 μm≤H≤8 μm.

[0052] When the depth of the oil reservoir 112 is too small, the oil storage space of the oil reservoir 112 is small, so that only a small amount of oil can be stored in the oil reservoir 112, which makes it difficult to achieve effective lubrication. When the depth of the oil reservoir 112 is too large, the deep oil reservoir 112 will reduce the structural stability of the orbiting scroll body 110.

[0053] In this embodiment, the depth H of the oil reservoir holes 112 satisfies 3 μm ≤ H ≤ 8 μm. Within this range, the oil reservoir holes 112 have sufficient oil storage space, allowing the oil in the multiple oil reservoir holes 112 to effectively lubricate. Furthermore, the depth of the oil reservoir holes 112 is not excessive, thereby avoiding damage to the structural stability of the orbiting scroll body 110 and ensuring that the orbiting scroll body 110 has sufficient structural strength.

[0054] Illustratively, H may be 3 μm, 5 μm, or 8 μm.

[0055] Combine Figure 3 and Figure 4 As shown, in some embodiments, optionally, the distance D between the center lines A1 of two adjacent oil storage holes 112 satisfies the following condition: 1 mm < D ≤ 3 mm.

[0056] The oil reservoirs 112 have a centerline A1. When the centerlines A1 of two adjacent oil reservoirs 112 are too far apart, the spacing between the two adjacent oil reservoirs 112 is large, resulting in a large portion of the space on the first end surface 111 not being covered by the oil reservoirs 112. This makes it difficult for the multiple oil reservoirs 112 to provide sufficient oil for lubrication. When the centerlines A1 of two adjacent oil reservoirs 112 are too close, the spacing between each oil reservoir 112 is too small, resulting in an excessively high distribution density of the oil reservoirs 112 and increasing the difficulty of creating multiple oil reservoirs 112.

[0057] In this solution, the distance D between the center lines A1 of two adjacent oil storage holes 112 satisfies 1mm<D≤3mm. This can ensure that the oil storage holes 112 are provided in part of the space on the first end surface 111, thereby providing sufficient oil for lubrication, and can also avoid the density of multiple oil storage holes 112 being too high, thereby reducing the difficulty of opening multiple oil storage holes 112.

[0058] Illustratively, D may be 1.2 mm, 2 mm, or 3 mm.

[0059] Combine Figure 1 and Figure 3 As shown, in some embodiments, optionally, a plurality of oil storage groups 130 are provided on the orbiting scroll body 110, and the plurality of oil storage groups 130 are concentrically distributed. The oil storage group 130 includes a plurality of oil storage holes 112, and the plurality of oil storage holes 112 in one oil storage group 130 are arranged along the circumference of the orbiting scroll body 110 ( Figure 1 The arrows in C point to the spaced distribution.

[0060] The multiple oil storage holes 112 are divided into multiple oil storage groups 130. The oil storage holes 112 in each oil storage group 130 are distributed along the circumference of the orbiting scroll body. The multiple oil storage groups 130 are distributed in a ring shape with the axis of the orbiting scroll body as the center, thereby forming an array of multiple oil storage holes 112 on the first end surface 111. This improves the uniformity of the distribution of the multiple oil storage holes 112, facilitates the opening of multiple oil storage holes 112 on the first end surface 111, and reduces interference between adjacent oil storage holes 112.

[0061] Combine Figure 1 、 Figure 5 and Figure 6 As shown, in some embodiments, optionally, the inner sidewall 113 of the oil storage hole 112 extends along the thickness direction L2 of the orbiting scroll body 110. Alternatively, the inner sidewall 113 of the oil storage hole 112 and the thickness direction L2 of the orbiting scroll body 110 form an angle α, α≤10°.

[0062] When the inner wall 113 of the oil storage hole 112 extends along the thickness direction L2 of the movable scroll body 110, the opening area of ​​the oil storage hole 112 is the same as the area of ​​the bottom wall 114 of the oil storage hole 112. The oil storage hole 112 is a straight cylinder, so that the oil storage hole 112 has a larger oil storage space.

[0063] Alternatively, the inner wall 113 of the oil storage hole 112 is inclined relative to the thickness direction L2 of the movable scroll body 110, and the inclination angle is less than 10°. The oil storage hole 112 has a structure that is wide at the top and narrow at the bottom, but due to the small inclination angle, the oil storage hole 112 still has a large oil storage space.

[0064] Exemplarily, α is 5°, 8° or 10°.

[0065] In an embodiment of the present invention, a movable scroll 100 is provided, which has a microporous structural feature. The bottom surface of the movable scroll body 110 is provided with a microporous structure such as a texture. A certain amount of lubricating oil is stored in the texture, which can effectively reduce the friction coefficient of the contact and mating part with the fixed scroll 200, thereby reducing friction work and friction loss, and improving reliability.

[0066] like Figure 7 As shown, in an embodiment of the present invention, a scroll assembly 600 is proposed, comprising: a fixed scroll 200 and an orbiting scroll 100 in any of the above embodiments, with a portion of the fixed scroll 200 resting on the first end surface 111 .

[0067] The scroll 120 is arranged on the first end face 111 in the movable scroll body 110. The scroll 120 needs to cooperate with the fixed scroll 200 to form a compression chamber. Therefore, the first end face 111 faces the fixed scroll 200. When the movable scroll 100 and the fixed scroll 200 cooperate, a part of the fixed scroll 200 will rest on the first end face 111. Under the drive of the crankshaft, a planar friction pair is formed between the first end face 111 and the fixed scroll 200.

[0068] A plurality of oil storage holes 112 are provided on the first end face 111, and oil can be stored in the oil storage holes 112. By utilizing the non-compressible property of the liquid, the oil supports and carries the static scroll 200. In addition, since the oil is filled in the oil storage holes 112, the surface friction pair between the first end face 111 and the static scroll 200 is improved from mixed friction to fluid dynamic pressure lubrication, which greatly reduces the friction coefficient between the movable scroll 100 and the static scroll 200, reduces the wear of the movable scroll 100 and the static scroll 200, and is conducive to improving the reliability of the movable scroll 100 and the static scroll 200.

[0069] In an embodiment of the present invention, a scroll compressor 700 is proposed, comprising: a scroll assembly 600 as in the above embodiment, and can achieve the same technical effects, which will not be described in detail here.

[0070] The scroll compressor 700 further includes structures such as an Oldham ring 300 , a main frame 400 and a crankshaft 500 .

[0071] In an embodiment of the present invention, an air conditioner is proposed, comprising: a scroll compressor as in the above embodiment, and capable of achieving the same technical effects, which will not be described in detail here.

[0072] In this utility model, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0073] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0074] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A movable scroll, characterized in that: include: An orbiting scroll body, wherein a first end surface of the orbiting scroll body is provided with a plurality of oil storage holes, wherein the oil storage holes are used to store lubricating oil; The scroll is connected to the movable scroll body, and the scroll is arranged on the first end surface.

2. The movable scroll according to claim 1, characterized in that: Among the plurality of oil storage holes, two adjacent oil storage holes are arranged at intervals.

3. The movable scroll according to claim 1 or 2, characterized in that: Along a first direction, a maximum width W of the oil storage hole satisfies the following condition: 1 mm ≤ W ≤ 1.5 mm. The first direction is perpendicular to a thickness direction of the movable scroll body.

4. The movable scroll according to claim 1 or 2, characterized in that: The depth H of the oil storage hole satisfies the following condition: 3 μm≤H≤8 μm.

5. The orbiting scroll according to claim 1 or 2, characterized in that: The distance D between the center lines of two adjacent oil storage holes meets the following condition: 1mm<D≤3mm.

6. The orbiting scroll according to claim 1 or 2, characterized in that: The movable scroll body is provided with a plurality of oil storage groups, and the plurality of oil storage groups are concentrically distributed; The oil storage group includes a plurality of oil storage holes, and the plurality of oil storage holes in one oil storage group are distributed at intervals along the circumference of the orbiting scroll body.

7. The orbiting scroll according to claim 1 or 2, characterized in that: The inner side wall of the oil storage hole extends along the thickness direction of the orbiting scroll body; or An included angle α is formed between the inner side wall of the oil storage hole and the thickness direction of the movable scroll body, and α is ≤ 10°.

8. A scroll assembly, characterized in that: include: static vortex disk; According to any one of claims 1 to 7, a portion of the fixed scroll abuts against the first end surface.

9. A scroll compressor, characterized in that: include: The scroll assembly of claim 8.

10. An air conditioner, characterized in that: include: The scroll compressor according to claim 9.

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