Supporting structure, thrust assembly and compressor

Abstract

The supporting structure comprises a supporting ring, an upper connecting area and a lower connecting area are arranged on the outer surface of the supporting ring, a plurality of upper connecting points are arranged on the upper connecting area in the circumferential direction of the outer surface of the supporting ring, and a plurality of lower connecting points are arranged on the lower connecting area in the circumferential direction of the outer surface of the supporting ring. The multiple upper connecting points and the multiple lower connecting points are connected with the shell, the contact area of the supporting ring and the shell is remarkably increased, the overall supporting rigidity of the compressor is improved, the bearing capacity and vibration resistance of the supporting ring are remarkably improved, and therefore the noise value of the compressor during high-speed operation is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular, to a support structure, a thrust component and a compressor. Background Art

[0002] As an efficient and compact compression device, scroll compressors are widely used in fields such as air conditioners and refrigeration. Scroll compressors achieve gas compression through the meshing movement of a moving scroll and a stationary scroll, and have advantages such as no leakage, low noise, and high efficiency. However, with the continuous increase in the rotational speed of the compressor, its dynamic characteristics and structural strength face greater challenges. In particular, the design of the lower thrust structure plays a key role in the overall performance of the compressor.

[0003] The traditional lower thrust structure of scroll compressors usually adopts a four-point welded support ring. This design can meet the basic requirements during low-speed operation, but under high-speed operation conditions, due to the high-frequency vibration and impact load between the moving scroll and the stationary scroll, it is easy to cause insufficient rigidity of the support ring, resulting in increased vibration of the compressor and excessive noise. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a support structure, a thrust component and a compressor, aiming to solve the problem that insufficient rigidity of the lower thrust structure easily leads to excessive noise during high-speed operation of the compressor.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides a support structure, including a support ring. The outer surface of the support ring is provided with an upper connection area and a lower connection area. A plurality of upper connection points are circumferentially arranged on the outer surface of the support ring in the upper connection area, and a plurality of lower connection points are circumferentially arranged on the outer surface of the support ring in the lower connection area.

[0007] Further, both the upper connection points and the lower connection points are welding spot positions for welding.

[0008] Further, the number of the upper connection points and the number of the lower connection points are both more than six.

[0009] Further, a plurality of the upper connection points and a plurality of the lower connection points are evenly arranged around the outer surface of the support ring.

[0010] Further, the number of the upper connection points is equal to the number of the lower connection points, and a plurality of the upper connection points and a plurality of the lower connection points are arranged in a one-to-one correspondence up and down.

[0011] Further, an upward flanging is provided extending from the upper surface edge of the support ring towards the center of the support ring, and a downward flanging is provided extending from the lower surface edge of the support ring towards the center of the support ring.

[0012] Further, a convex edge is provided extending from the inner wall of the support ring towards the center of the support ring, and a connection hole is provided on the convex edge.

[0013] In a second aspect, the present invention further provides a thrust assembly, including a housing, a thrust plate, a bracket, a crankshaft, and the above-mentioned support structure. The crankshaft passes through the bracket, the thrust plate is arranged at the lower end of the crankshaft, and the thrust plate is fixedly connected to the bracket. The bracket is sleeved in the inner ring of the support ring and fixedly connected to the support ring, and the support ring is fixedly connected to the housing.

[0014] Further, welding holes are provided through the housing corresponding to the positions of the upper connection point and the lower connection point of the support ring, and the support ring is welded to the housing through the welding holes.

[0015] In a third aspect, the present invention further provides a compressor, including the above-mentioned thrust assembly.

[0016] The beneficial effects of the present invention compared with the prior art are as follows: A support structure includes a support ring. The outer surface of the support ring is provided with an upper connection area and a lower connection area. The upper connection area is provided with a plurality of upper connection points along the circumferential direction of the outer surface of the support ring, and the lower connection area is provided with a plurality of lower connection points along the circumferential direction of the outer surface of the support ring. By connecting the support ring to the housing through the plurality of upper connection points and the plurality of lower connection points provided, the contact area between the support ring and the housing is significantly increased, the overall support stiffness of the compressor is increased, the load-bearing capacity and vibration resistance of the support ring are significantly improved, and thus it is beneficial to reduce the noise value during the high-speed operation of the compressor.

[0017] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the following preferred embodiments are specifically described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of a compressor provided for a specific embodiment of the present invention;

[0020] Figure 2 A schematic diagram of a partial structure of a compressor provided by a specific embodiment of the present invention;

[0021] Figure 3 A schematic structure diagram of a support ring provided by a specific embodiment of the present invention Figure 1 ;

[0022] Figure 4 A schematic structure diagram of a support ring provided by a specific embodiment of the present invention Figure 2 ;

[0023] Figure 5 A schematic structure diagram of a support ring provided by a specific embodiment of the present invention Figure 3 ;

[0024] Figure 6 A schematic structure diagram of a support ring provided by a specific embodiment of the present invention Figure 4 .

[0025] Reference numerals

[0026] 1. Support ring; 11. Convex edge; 111. Connecting hole; 12. Inner ring of the support ring; 13. Through groove; 2. Thrust plate; 3. Bracket; 4. Crankshaft; 5. Housing; 51. Welding hole. Detailed implementation manners

[0027] Next, in combination with specific embodiments of the present invention, the technical solutions of the present invention will be clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is 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 construed as a limitation to the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0030] In the present invention, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "coupled", "fixed", etc. should be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely means that the first feature has a lower horizontal height than the second feature.

[0032] 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 also be a middle 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 middle element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0033] Such as Figures 1 to 6As shown in the figure, an embodiment of the present invention provides a compressor, including a thrust assembly. The thrust assembly includes a housing 5, a thrust plate 2, a bracket 3, a crankshaft 4, and a support structure. The support structure includes a support ring 1. The housing 5 serves as the external frame of the compressor, providing protection and support for internal components. The bracket 3 provides installation and positioning for the crankshaft 4. The crankshaft 4 passes through the central hole of the bracket 3 and can rotate within the bracket 3. The thrust plate 2 is provided at the lower end of the crankshaft 4 and is fixedly connected to the bracket 3 through bolts, playing a role in restricting the axial displacement of the crankshaft 4. The bracket 3 is sleeved in the inner ring 12 of the support ring and is fixedly connected to the support ring 1. The support ring 1 is fixedly connected to the housing 5. The support ring 1 is a key component connecting the bracket 3 and the housing 5. When the thrust plate 2 is stressed, the force is transmitted to the bracket 3, then from the bracket 3 to the support ring 1, and finally from the support ring 1 to the housing 5.

[0034] In the prior art, the scroll compressor uses a four-point welded support ring. This design can meet the basic requirements during low-speed operation, but under high-speed operation conditions, due to the high-frequency vibration and impact load between the moving scroll and the fixed scroll, it is easy to cause insufficient rigidity of the support mechanism, resulting in increased vibration of the compressor and increased noise. For this reason, this application is proposed to solve this problem.

[0035] In this application, the outer surface of the support ring 1 is provided with an upper connection area and a lower connection area. The upper connection area is circumferentially provided with a plurality of upper connection points along the outer surface of the support ring 1, and the lower connection area is circumferentially provided with a plurality of lower connection points along the outer surface of the support ring 1.

[0036] By connecting the plurality of upper connection points and the plurality of lower connection points to the housing 5, the contact area between the support ring 1 and the housing 5 is significantly increased, the overall support stiffness of the compressor is increased, the bearing capacity and anti-vibration performance of the support ring 1 are significantly improved, and thus it is beneficial to reduce the noise value during high-speed operation of the compressor.

[0037] In one embodiment, both the upper connection points and the lower connection points are welding point positions for welding. The housing 5 is provided with welding holes 51 penetrating through the positions corresponding to the upper connection points and the lower connection points of the support ring 1. The support ring 1 and the housing 5 are welded and connected through the welding holes 51.

[0038] The heights of the upper connection points and the lower connection points on the outer surface of the support ring 1 can be adjusted adaptively according to the situation. The welding method can also be selected adaptively. Exemplarily, the upper connection points are set at 10 mm from the upper surface of the support ring 1, the lower connection points are set at 10 mm from the lower surface of the support ring 1. When welding, gas metal arc welding (GMAW) is used, an ER50-6 welding wire with a diameter of 1.2 mm is selected, the welding current is 180 A, the arc voltage is 22 V, the gas flow rate is 18 L / min, and the welding time for each point is controlled at 1.5 seconds. The welding method has higher firmness and is more suitable for scenarios such as compressors that require high-frequency operation.

[0039] Further, the number of upper connection points in the upper connection area and the number of lower connection points in the lower connection area are both more than six. Specifically, the upper connection area and the lower connection area can be respectively provided with six, seven, eight or more connection points. Exemplarily, the upper connection area is 5 mm away from the upper surface of the support ring 1, and 6 upper connection points are evenly distributed along the circumferential direction. The lower connection area correspondingly sets 6 lower connection points at a position 5 mm away from the lower surface of the support ring 1. Exemplarily, the upper connection area is 5 mm away from the upper surface of the support ring 1, and eight upper connection points are evenly distributed along the circumferential direction. The lower connection area correspondingly sets eight lower connection points at a position 5 mm away from the lower surface of the support ring 1.

[0040] In one embodiment, multiple upper connection points in the upper connection area and multiple lower connection points in the lower connection area are both evenly arranged around the outer surface of the support ring 1. Exemplarily, the upper connection area is 6 mm away from the upper surface of the support ring 1, and 6 upper connection points are evenly distributed at equal angular intervals of 60° along the circumferential direction; the lower connection area is at a position 6 mm away from the lower surface of the support ring 1, and 6 lower connection points are symmetrically arranged at the same 60° interval.

[0041] In one embodiment, on the basis of the uniform arrangement of the connection points, the surface of the connection area of the support ring 1 is treated. The sandblasting process is used to process the surface roughness of the connection area to increase the contact area and bonding force during welding. At the same time, the support ring 1 made of stainless steel can be nickel-plated (the coating thickness is 0.01 mm) to prevent oxidation during welding, thereby improving the bonding strength between the solder joints and the support ring 1.

[0042] By adopting the uniform arrangement of multiple upper connection points in the upper connection area and multiple lower connection points in the lower connection area, the force on the support ring 1 is more balanced, reducing the phenomenon of stress concentration. Compared with the non-uniform arrangement, its radial load-bearing capacity and anti-vibration performance are both improved, thereby effectively reducing the operating noise of the compressor.

[0043] In some embodiments, multiple upper connection points in the upper connection area and multiple lower connection points in the lower connection area are not arranged in a uniform manner, but the upper connection points and the lower connection points are spirally distributed on the outer surface of the support ring 1. Starting from one end of the upper connection area of the support ring 1, the connection points are arranged in a spiral ascending manner, and the lower connection area adopts a reverse spiral symmetric layout.

[0044] In one embodiment, the number of upper connection points in the upper connection area is equal to the number of lower connection points in the lower connection area, and multiple upper connection points in the upper connection area and multiple lower connection points in the lower connection area are arranged in a one-to-one correspondence up and down. With such a design, the force on the support ring 1 is completely symmetric. Compared with the non-corresponding structure, the radial stiffness and axial load-bearing capacity are improved, effectively reducing the vibration and noise during the operation of the compressor.

[0045] It should be noted that generally, the outer peripheral surface of the support ring 1 is provided with a through groove 13 that penetrates up and down, and the number of upper connection points and lower connection points is the same as the number of through grooves 13. The area between two adjacent through grooves 13 serves as the setting area for the upper connection points and the lower connection points.

[0046] Exemplarily, the outer peripheral surface of the support ring 1 is provided with six through grooves 13. The upper connection area is located 5 mm away from the upper surface of the support ring 1, and six upper connection points are evenly distributed at intervals of 60° along the circumferential direction; the lower connection area is 5 mm away from the lower surface of the support ring 1, and six lower connection points are also arranged at intervals of 60°, and the upper connection points and the lower connection points correspond to each other one by one in the vertical direction.

[0047] In an embodiment, instead of the upper connection points and the lower connection points corresponding to each other one by one in the vertical direction, the lower connection points in the lower connection area are arranged at a certain angle offset relative to the upper connection points in the upper connection area. Exemplarily, six upper connection points are arranged at intervals of 60° in the upper connection area, and the lower connection points in the lower connection area are rotated 15° relative to the upper connection points in the vertical projection direction. This offset corresponding method can make the stress distribution of the support ring 1 more dispersed when bearing alternating loads, and avoid the occurrence of resonance phenomena.

[0048] In an embodiment, the upper surface edge of the support ring 1 extends towards the center of the support ring 1 to form an upper flanging, and the lower surface edge of the support ring 1 extends towards the center of the support ring 1 to form a lower flanging. The upper flanging and the lower flanging can be continuous or discontinuous, the thickness of the upper flanging and the lower flanging can be the same as the thickness of the main body of the support ring 1, and the upper flanging and the lower flanging can be integrally formed with the main body of the support ring 1 by stamping process.

[0049] By providing the upper flanging and the lower flanging, the axial stiffness and the radial load-bearing capacity of the support ring 1 are improved, effectively avoiding the problems of dynamic deformation and stress concentration when the compressor operates at high speed, and further improving the service life and reliability of the compressor.

[0050] Exemplarily, the upper flanging extends 2 mm from the upper surface edge of the support ring 1 towards the center, the width of the upper flanging is 5 mm, and the angle of the upper flanging is 90°; the lower flanging is symmetrically arranged at the lower surface edge of the support ring 1, and the dimensions are the same as those of the upper flanging. Both the upper flanging and the lower flanging are continuous annular flangings.

[0051] In an embodiment, instead of using continuous annular flangings, the upper flanging and the lower flanging are designed as a segmented structure. For example, a section of flanging with a length of 15 mm is provided at intervals of 30° at the upper surface edge, and the lower surface also adopts a segmented symmetrical arrangement. This segmented flanging structure reduces the material usage and processing cost while ensuring a certain stiffness.

[0052] As Figure 4As shown, a convex edge 11 extends from the inner wall of the support ring 1 towards the center of the support ring 1. The thickness of the convex edge 11 is greater than the thickness of the main body of the support ring 1 to enhance the strength of the convex edge 11. The convex edge 11 is provided with a connection hole 111. The support ring 1 is bolted to the bracket 3 through the connection hole 111. The convex edge 11 and the support ring 1 are integrally formed to enhance the reliability of the connection.

[0053] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A support structure, characterized in that, It includes a support ring. An upper connection area and a lower connection area are provided on the outer surface of the support ring. A plurality of upper connection points are circumferentially arranged along the outer surface of the support ring in the upper connection area, and a plurality of lower connection points are circumferentially arranged along the outer surface of the support ring in the lower connection area.

2. The support structure according to claim 1, characterized in that, Both the upper connection points and the lower connection points are welding spot positions for welding.

3. A support structure according to claim 1, characterized in that, The number of the upper connection points and the number of the lower connection points are both more than six.

4. A support structure according to claim 1, characterized in that, A plurality of the upper connection points and a plurality of the lower connection points are both evenly arranged around the outer surface of the support ring.

5. A support structure according to claim 1, characterized in that, The number of the upper connection points is equal to the number of the lower connection points, and a plurality of the upper connection points and a plurality of the lower connection points are arranged in a one-to-one correspondence up and down.

6. A support structure according to claim 1, characterized in that, An upper flanging is extended from the edge of the upper surface of the support ring towards the center of the support ring, and a lower flanging is extended from the edge of the lower surface of the support ring towards the center of the support ring.

7. A support structure according to claim 1, characterized in that A convex edge is extended from the inner wall of the support ring towards the center of the support ring, and a connection hole is provided on the convex edge.

8. A thrust component, characterized in that, It includes a housing, a thrust plate, a bracket, a crankshaft and the support structure according to any one of claims 1-7. The crankshaft is passed through the bracket, the thrust plate is arranged at the lower end of the crankshaft, and the thrust plate is fixedly connected with the bracket. The bracket is sleeved in the inner ring of the support ring and fixedly connected with the support ring, and the support ring is fixedly connected with the housing.

9. The thrust assembly according to claim 8, wherein, Welding holes are penetrated through the housing corresponding to the positions of the upper connection points and the lower connection points of the support ring, and the support ring and the housing are welded and connected through the welding holes.

10. A compressor, characterized in that, It includes the thrust assembly according to any one of claims 8-9.

Images