Bionic texture structure, compressor roller, compressor and air conditioner

Abstract

The invention discloses a bionic texture structure, a compressor roller, a compressor and an air conditioner, the bionic texture structure comprises a base body, the surface of the base body is provided with a plurality of groove units, the groove units are distributed in the flowing direction of fluid, each groove unit comprises a plurality of V-shaped grooves which are arranged at intervals and are different in length, and the groove units are arranged in the V-shaped grooves. The arrangement direction of the multiple V-shaped grooves in the same groove unit is perpendicular to the flowing direction of fluid, and the length direction of the V-shaped grooves is the same as the flowing direction of the fluid. The structure solves the problems of power consumption increase and performance reduction caused by gas friction resistance and contact friction of the rollers during operation of the compressor.

Description

Technical Field

[0001] The invention relates to the technical field of compressors, and in particular to a bionic texture structure, a compressor roller, a compressor and an air conditioner. Background Art

[0002] The working principle of the rolling rotor compressor is as follows: a cylindrical roller is placed in a cylindrical cylinder, and the center of rotation of the roller coincides with the center of the cylinder. The roller rotates under the drive of the motor by the crankshaft eccentric circle on its inner diameter. A sliding vane that can slide back and forth is placed in the sliding vane groove of the cylinder, and a pump spring is installed at one end to ensure that one end of the sliding vane is always in contact with the outer circle of the roller, and the sliding vane reciprocates in the sliding vane groove. Therefore, the sliding vane, the inner surface of the cylinder, the outer surface of the roller, and the upper and lower flange end faces form a high-pressure chamber and a low-pressure chamber. During operation, the crankshaft drives the roller to rotate one circle, and the air is sucked from the low-pressure chamber and exhausted from the high-pressure chamber to complete a working cycle, and the above process is repeated continuously.

[0003] During this process, the crankshaft drives the roller to rotate at high speed in the cylinder. The roller is affected by the gas resistance from the air intake port and the turbulent gas resistance in the cylinder working chamber, which will increase the power consumption of the compressor and reduce performance. In addition, when the roller rotates with the crankshaft, it will rotate on its own and slide relative to the vane, causing a certain amount of friction. When the relative sliding speed is high, the friction power consumption is also high, affecting the overall performance.

[0004] In the prior art, in order to reduce the power consumption caused by the roller, there are ways to change the roller material and reduce the roller's deadweight, such as lightweight ceramic materials, but the processing difficulty is relatively large. Or aluminum-based materials are used, but the thermal expansion coefficient is greatly different from other matching parts such as cylinders, and the assembly clearance is difficult to grasp. There are also designs that reduce the wall thickness, but too thin a wall thickness can easily cause the roller to be insufficiently rigid. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a bionic texture structure, a compressor roller, a compressor and an air conditioner, aiming to solve the problem of increased power consumption and reduced performance caused by gas friction resistance and contact friction on the roller when the compressor is running.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] In the first aspect, the present invention provides a bionic texture structure, including a substrate, a surface of which is provided with a plurality of groove units, the plurality of groove units being distributed along the flow direction of the fluid, the groove unit comprising a plurality of V-grooves arranged at intervals and of different lengths, the arrangement direction of the plurality of V-grooves in the same groove unit being perpendicular to the flow direction of the fluid, and the length direction of the V-grooves being the same as the flow direction of the fluid.

[0008] Furthermore, the cross-sectional shape of the V-shaped groove is an isosceles trapezoid, a square triangle or a rounded triangle.

[0009] Furthermore, the region between two adjacent V-shaped grooves in the same groove unit constitutes a rib structure, and the cross-sectional shape of the rib structure is an isosceles trapezoid.

[0010] Furthermore, the V-shaped grooves in the same groove unit are arranged symmetrically.

[0011] Furthermore, the lengths of the V-shaped grooves in the same groove unit are distributed in an arithmetic progression.

[0012] Furthermore, the lengths of the V-shaped grooves distributed from the center position to the edge position in the same groove unit decrease successively.

[0013] Furthermore, the planar contour shape of the trench unit is a rhombus.

[0014] In a second aspect, the present invention further provides a compressor roller, comprising a roller body, and the above-mentioned bionic texture structure, wherein the bionic texture structure is arranged on the outer circumferential surface of the roller body.

[0015] In a third aspect, the present invention further provides a compressor, comprising the above-mentioned compressor roller.

[0016] In a fourth aspect, the present invention further provides an air conditioner, comprising the above-mentioned compressor.

[0017] Compared with the prior art, the present invention has the following beneficial effects: a bionic texture structure, comprising a substrate, a surface of which is provided with a plurality of groove units, the plurality of groove units being distributed along the flow direction of a fluid, the groove unit comprising a plurality of V-grooves arranged at intervals and of different lengths, the arrangement direction of the plurality of V-grooves in the same groove unit being perpendicular to the flow direction of the fluid, and the length direction of the V-grooves being the same as the flow direction of the fluid. When this structure is applied to the compressor roller, during the rotation of the roller body, the downstream V-groove interacts with the downstream "reverse vortex pair", which will induce the generation of a secondary vortex in the opposite direction of the "reverse vortex pair". The secondary vortex can effectively limit the vortex's ability to entrain low-speed gas and lift low-speed fluid upward, reduce the number of low-speed flow bands on the roller body surface, and effectively hinder the turbulent burst process, thereby improving the fluid movement stability of the boundary layer and reducing gas resistance. At the same time, the V-groove also plays a secondary lubrication role. A certain V-groove depth can store lubricating fluid, and the stored lubricating fluid will be squeezed, carried or penetrated to the mating surface with the shear movement, playing a secondary lubrication role, reducing the friction between the roller body and the sliding vane, and overall solving the problem of increased power consumption and reduced performance caused by gas friction resistance and contact friction when the compressor is running.

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of a bionic texture structure provided in Example 1 of the present invention;

[0021] Figure 2 A cross-sectional view of a bionic texture structure provided in Example 1 of the present invention;

[0022] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0023] Figure 4 A distribution diagram of a bionic texture structure provided in Example 1 of the present invention;

[0024] Figure 5 A schematic structural diagram of a compressor roller provided in Embodiment 1 of the present invention;

[0025] Figure 6 A schematic structural diagram of a bionic texture structure provided in a second example of the present invention;

[0026] Figure 7 A schematic structural diagram of a bionic texture structure provided in the third embodiment of the present invention.

[0027] Reference numerals

[0028] 1. Bionic texture structure; 11. Matrix; 111. Groove unit; 1111. V-shaped groove; 112. Rib structure; 2. Roller body; 21. Outer circumferential surface of roller body; 1111A. V-shaped groove; 1111B. V-shaped groove. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments 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.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0035] Embodiment 1

[0036] like Figures 1 to 4 As shown, an embodiment of the present invention provides a bionic texture structure 1, including a substrate 11, a surface of the substrate 11 is provided with a plurality of groove units 111, the plurality of groove units 111 are distributed along the flow direction of the fluid, the groove unit 111 includes a plurality of V-grooves 1111 arranged at intervals and of different lengths, the arrangement direction of the plurality of V-grooves 1111 in the same groove unit 111 is perpendicular to the flow direction of the fluid, and the length direction of the V-grooves 1111 is the same as the flow direction of the fluid.

[0037] When the structure is applied to the compressor roller, during the rotation of the roller body 2, the downstream V-groove 1111 interacts with the downstream "reverse vortex pair", which will induce the generation of a secondary vortex in the opposite direction of the "reverse vortex pair". The secondary vortex can effectively limit the ability of the vortex to entrain low-speed gas and lift the low-speed fluid upward, reduce the number of low-speed flow bands on the surface of the roller body 2, and effectively hinder the turbulent burst process, thereby improving the fluid motion stability of the boundary layer and reducing the gas resistance. At the same time, the V-groove 1111 also plays a secondary lubrication role. A certain depth of the V-groove 1111 can store lubricating fluid. The stored lubricating fluid will be squeezed, carried or penetrated to the mating surface with the shear movement, playing a secondary lubrication role, reducing the friction between the roller body 2 and the sliding plate, and overall solving the problem of increased power consumption and reduced performance caused by the friction resistance of the gas and contact friction when the compressor is running. In addition, the V-groove 1111 can also collect and accommodate abrasive particles or foreign particles to prevent the continuous wear of the roller body 2 of the compressor by abrasive particles.

[0038] The arrangement of the plurality of groove units 111 along the fluid direction ensures that when the fluid flows through the surface, it can interact with the flow direction to the greatest extent.

[0039] like Figure 4As shown, each groove unit 111 is composed of a plurality of V-grooves 1111, which are arranged at intervals and have varying lengths, i.e., different lengths. The area between two adjacent V-grooves 1111 in the same groove unit 111 constitutes a rib structure 112, and the cross-sectional shape of the rib structure 112 is an isosceles trapezoid. By changing the length of the V-grooves 1111, rib structures 112 of different lengths can be formed, and rib structures 112 of different lengths will optimize the surface airflow at multiple scales, affect the airflow of different scales, reduce turbulence and eddy currents in different ranges, and thus control the stability of the boundary layer. In addition, rib structures 112 of different lengths can better disperse the pressure brought by the fluid and enhance the strength of the surface structure.

[0040] It should be noted that the “different lengths” here does not only mean that the lengths of all V-grooves 1111 in the same groove unit 111 are different, but also that the lengths of some of them may be the same.

[0041] The planar profile of the groove unit 111 is a rhombus. The rhombus is formed because all V-grooves 1111 and all rib structures 112 in the same groove unit 111 are present together. Each groove unit 111 is similar to a shark skin scale structure.

[0042] like Figure 3 As shown, in this embodiment, the cross-sectional shape of the V-shaped groove 1111 is a square triangle.

[0043] In one embodiment, the V-shaped grooves 1111 in the same groove unit 111 are arranged symmetrically, such as Figure 4 As shown, a groove unit 111 has seven V-grooves 1111, and three V-grooves 1111 on the upper and lower sides are symmetrically arranged along a V-groove 1111 in the middle. The symmetrical arrangement is conducive to forming a balanced flow field structure. This balanced flow field can effectively reduce the instability and turbulence during the fluid flow process, reduce energy loss, and improve fluid dynamics efficiency. At the same time, the symmetrical arrangement of the V-grooves 1111 is conducive to forming a symmetrical vortex structure on both sides of the groove unit 111, which can not only effectively control the flow direction of the fluid, but also form a stable secondary vortex, further improving the stability of the fluid boundary layer.

[0044] The depth of the V-shaped groove 1111 can be designed asymmetrically while maintaining the symmetry of the length. For example, in some applications, in order to enhance the mixing effect of the fluid or guide the flow path of a special fluid, the depth of the V-shaped groove 1111 on one side of the groove unit 111 can be designed to be slightly greater than that on the other side. This asymmetrical depth design can enhance local fluid disturbance and meet special functional requirements.

[0045] like Figure 3As shown, the drag reduction rate of the V-shaped groove 1111 is mainly determined by the width s and depth h of the V-shaped groove 1111. Where:

[0046]

[0047] Where: s is the width of the V-groove 1111, h is the depth of the V-groove 1111, ν is the relative speed, υ is the viscosity of the refrigerant, C f is the friction coefficient, S is the obstructed area, ρ is the refrigerant density, and F is the surface friction of the object.

[0048] In this embodiment, s and h are finally set to 0.1mm≤s≤0.3mm, 3μm≤h≤9μm, and the effect is better within this range.

[0049] like Figure 4 As shown, in one embodiment, the lengths of the V-grooves 1111 in the same groove unit 111 are distributed in an arithmetic progression, and the lengths of the V-grooves 1111 distributed from the center position to the edge position in the same groove unit 111 decrease successively.

[0050] The distribution of the arithmetic progression can ensure that the roller body 2 and the sliding plate have corresponding V-grooves 1111 when they contact at any angle, thereby ensuring the dynamic pressure lubrication effect.

[0051] In one embodiment, if Figure 4 As shown, the length of the shortest V-groove 1111 is 0.5mm≤A1≤1.5mm. If the length is too short, the processing of the entire part will take too long and the V-groove 1111 will be too small to store oil and grinding chips. If the V-groove 1111 is too large, it will affect the rigidity of the part surface.

[0052] It is preferred that the interval H between two adjacent V-grooves 1111 be maintained at 1.5s to 3s, and it is preferred that the interval L between the front and rear V-grooves 1111 in the front and rear two different groove units 111 be maintained at 0.5A1 to 1.5A1. If the interval is too small, the stiffness of the rib structure 112 is too low, and if the interval is too large, the texture density is too low, which will affect the drag and friction reduction effect. In addition, in terms of lubrication, if the interval is too large, the lubricating oil cannot fully cover each V-groove 1111, which will also affect the lubrication effect.

[0053] It should be noted that the width or depth of the V-groove 1111 can be adjusted accordingly according to specific work requirements. For example, in order to further enhance the lubrication effect, the width of the V-groove 1111 can vary with the length to form a gradient width distribution, thereby providing a better lubrication effect under different wear states or fluid conditions.

[0054] It should be noted that the bionic texture structure 1 can be directly integrated into the body of the object in practical application. In this case, the base 11 of the bionic texture structure 1 is the body of the object. Of course, it can also be used as an independent component and installed on the body of the object through a connecting structure. In this case, the base 11 can be fixed to the body of the object through a connecting structure such as welding, clamping or threaded connection.

[0055] like Figures 1 to 5 As shown, an embodiment of the present invention further provides a compressor roller, including a roller body 2, and the above-mentioned bionic texture structure 1, the bionic texture structure 1 is arranged on the outer cylindrical surface 21 of the roller body, the refrigerant flow direction of the compressor is the same as the circumferential direction of the roller body 2, the groove units 111 on the roller body 2 are distributed along the refrigerant flow direction, and the length direction of the V-groove 1111 is the same as the refrigerant flow direction.

[0056] By setting the bionic texture structure 1 on the outer cylindrical surface 21 of the roller body, the flow field distribution around the roller body 2 is improved, and the gas friction resistance is reduced. The V-groove 1111 can also ensure dynamic pressure lubrication of the lubricating liquid and collect wear debris to reduce friction.

[0057] In this embodiment, the bionic texture structure 1 is directly integrated into the roller body 2, that is, it is integrated with the roller body 2. Of course, in other embodiments, the bionic texture structure 1 can be installed as an independent component on the outer circumferential surface 21 of the roller body through a connecting structure.

[0058] The embodiment of the present invention further provides a compressor, comprising the compressor roller described above. Except for the compressor roller described above, the remaining structures of the compressor can be the same as those in the prior art, and the remaining structures will not be described in detail herein.

[0059] The embodiment of the present invention further provides an air conditioner, comprising the above compressor. Except for the above compressor, the rest of the structure of the air conditioner can be the same as that in the prior art, and the rest of the structure will not be described in detail here.

[0060] Embodiment 2

[0061] like Figure 6 As shown, the difference between this embodiment and embodiment one is that the cross-sectional shape of the V-shaped groove 1111A is different. Specifically, in this embodiment, the cross-sectional shape of the V-shaped groove 1111A is a rounded triangle. This V-shaped groove 1111A still has the technical effect of the V-shaped groove in embodiment one.

[0062] Embodiment 3

[0063] like Figure 7As shown, the difference between this embodiment and embodiment one is that the cross-sectional shape of the V-shaped groove 1111B is different. Specifically, in this embodiment, the cross-sectional shape of the V-shaped groove 1111B is an isosceles trapezoid. This V-shaped groove 1111B still has the technical effect possessed by the V-shaped groove in embodiment one.

[0064] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A bionic texture structure, characterized in that: It includes a substrate, a surface of which is provided with a plurality of groove units, the plurality of groove units are distributed along the flow direction of the fluid, the groove unit includes a plurality of V-shaped grooves arranged at intervals and of different lengths, the arrangement direction of the plurality of V-shaped grooves in the same groove unit is perpendicular to the flow direction of the fluid, and the length direction of the V-shaped groove is the same as the flow direction of the fluid.

2. A bionic texture structure according to claim 1, characterized in that: The cross-sectional shape of the V-shaped groove is an isosceles trapezoid, a square triangle or a rounded triangle.

3. A bionic texture structure according to claim 1 or 2, characterized in that: The area between two adjacent V-shaped grooves in the same groove unit constitutes a rib structure, and the cross-sectional shape of the rib structure is an isosceles trapezoid.

4. A bionic texture structure according to claim 1 or 2, characterized in that: The V-shaped grooves in the same groove unit are arranged symmetrically.

5. The bionic texture structure according to claim 4, characterized in that: The lengths of the V-shaped grooves in the same groove unit are distributed in an arithmetic progression.

6. The bionic texture structure according to claim 5, characterized in that: The lengths of the V-shaped grooves distributed from the center position to the edge position in the same groove unit decrease successively.

7. The bionic texture structure according to claim 1, characterized in that: The planar profile of the trench unit is a rhombus.

8. A compressor roller, characterized in that: It comprises a roller body, and the bionic texture structure described in any one of claims 1 to 7, wherein the bionic texture structure is arranged on the outer circumferential surface of the roller body.

9. A compressor, characterized in that: Comprising the compressor roller of claim 8.

10. An air conditioner, characterized in that: Comprising the compressor as claimed in claim 9.

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