Scroll thickness correction method for scroll compressor and scroll compressor

Abstract

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Description

Technical Field

[0001] This invention belongs to the field of compressors, specifically relating to a method for correcting the thickness of the scroll body in a scroll compressor and the scroll compressor itself. Background Technology

[0002] The scroll compressor has scroll-shaped scroll bodies vertically arranged on the moving and stationary scroll plates. The revolution of the moving plate causes the moving and stationary scroll bodies to mesh, forming several changing crescent-shaped working chambers. The fluid working medium is drawn in from the outside and gradually compressed inward, and finally discharged outward through the central exhaust port.

[0003] In actual operation, due to the constant changes in temperature and pressure of the working fluid during compression, coupled with the centrifugal inertial force of the rotating disc, the moving and stationary scroll bodies will undergo uneven deformation. This causes the sides of the moving and stationary scroll bodies generated according to the profile theory to come into partial contact and cannot be completely fitted. In actual operation, the sides of the scroll bodies are prone to large frictional wear and gaps, which leads to a decrease in compressor efficiency. Summary of the Invention

[0004] The purpose of this invention is to address the problems in the prior art by providing a method for correcting the thickness of the scroll body in a scroll compressor and a scroll compressor, which can reduce local contact and side clearance dimensions of the scroll body and improve the efficiency of the compressor.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] Firstly, a method for correcting the thickness of the scroll body in a scroll compressor is proposed. The moving scroll body of the moving disk includes a first correction segment, a second correction segment, and a first centerline segment; the stationary scroll body of the stationary disk includes a third correction segment, a fourth correction segment, and a second centerline segment; the first correction segment, the second correction segment, the third correction segment, and the fourth correction segment are respectively corrected in the normal direction by a first-type line segment, a second-type line segment, a third-type line segment, and a fourth-type line segment. Obtained, thickness increases The value is positive, and the thickness decreases. The value is negative, so the thickness is corrected. The following relationship is satisfied within the range of each type of line segment: For the first type of line segment at the development angle The second type of line segment at the angle of expansion The third type of line segment at the angle of expansion Type IV line segment at the angle of expansion Corrected thickness They are different from each other, respectively , , , .

[0007] As a preferred option, when the first type of line segment and the fourth type of line segment have an extension angle of... During engagement, through the given first clearance on the engagement side. To determine the optimal correction thickness for type I and type IV line segments. , It satisfies the following relationship:

[0008]

[0009] Thus, the first and fourth revised sections are obtained.

[0010] As a preferred option, the corrected thickness of the first type line segment and the fourth type line segment , It satisfies the following relationship: .

[0011] As a preferred option, when the second type line segment and the third type line segment have an extension angle of... During engagement, the second gap is provided on the engagement side of the second type line segment and the third type line segment. To determine the optimal correction thickness for type II and type III line segments. , It satisfies the following relationship:

[0012]

[0013] Thus, the second and third revised sections are obtained.

[0014] As a preferred option, the corrected thickness of the second type line segment and the third type line segment , It satisfies the following relationship: .

[0015] As a preferred option, based on the lateral deformation of the first type of line segment Normal deformation of the meshing side of the fourth type line segment Determine the optimal correction thickness for type I and type IV line segments. , It satisfies the following relationship:

[0016]

[0017] Thus, the first and fourth revised sections are obtained.

[0018] As a preferred option, the corrected thickness of the first type line segment and the fourth type line segment and The following relationship must be satisfied: .

[0019] As a preferred option, based on the lateral deformation of the second type of line segment Normal deformation of the meshing side of the third type line segment Determine the optimal correction thickness for type II and type III line segments. , It satisfies the following relationship:

[0020]

[0021] Thus, the second and third revised sections are obtained.

[0022] As a preferred option, the corrected thickness of the second type line segment and the third type line segment and The following relationship must be satisfied: .

[0023] Secondly, a scroll compressor is proposed, wherein the scroll bodies of the moving disk and the stationary disk are modified using the scroll body thickness correction method of the scroll compressor.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] For the dynamic and static scroll bodies generated according to profile theory, in actual operation, due to the continuous changes in temperature and pressure of the working fluid during compression, coupled with the centrifugal inertial force of the rotating disc, the dynamic and static scroll bodies will undergo uneven deformation. This causes local contact between the sides of the dynamic and static scroll bodies, preventing them from fully fitting together. Consequently, the sides of the scroll bodies are prone to significant frictional wear and gaps, reducing compressor efficiency. To address this, the scroll body thickness correction method of this invention corrects the thickness of the first, second, third, and fourth profile segments in the normal direction. Obtain the first, second, third, and fourth modified segments, and the first type of line segment at the expansion angle. The second type of line segment at the angle of expansion The third type of line segment at the angle of expansion Type IV line segment at the angle of expansion Corrected thickness The thicknesses of the dynamic and static scroll bodies are different. By modifying the thickness of the scroll bodies, the local contact and side clearance of the scroll bodies can be reduced, thereby greatly reducing friction and wear and internal leakage losses during the compression process and effectively improving the efficiency of the compressor. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0027] Figure 1 This is a schematic diagram of the scroll body thickness correction method of the scroll compressor according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the first correction segment and the fourth correction segment confirmed by the first type line segment, the fourth type line segment, and the correction thickness provided in the embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the second type line segment, the third type line segment, and the correction thickness confirming the second correction segment and the third correction segment, provided by an embodiment of the present invention;

[0030] Figure 4 This is another schematic diagram provided by an embodiment of the present invention, which confirms the second correction segment and the third correction segment by the second type line segment, the third type line segment, and the correction thickness. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] like Figure 1 As shown, according to an embodiment of the scroll compressor's scroll body thickness correction method of the present invention, the moving scroll body 100 of the moving disk includes an outer first correction segment 1, an inner second correction segment 2, and a first centerline segment 5; the stationary scroll body 200 of the stationary disk includes an outer third correction segment 3, an inner fourth correction segment 4, and a second centerline segment 6. The first correction segment is tangent to the first centerline segment at point A, the second correction segment is tangent to the first centerline segment at point B, the third correction segment is tangent to the second centerline segment at point E, and the fourth correction segment is tangent to the first centerline segment at point F. The endpoints of the first, second, third, and fourth correction segments are points C, D, H, and G, respectively.

[0033] like Figure 2 , Figure 3 shown Figure 1The locally enlarged structure consists of four correction segments: the first correction segment, the second correction segment, the third correction segment, and the fourth correction segment. The thickness of these segments is corrected in the normal direction by line segments 10 (type 1), 20 (type 2), 30 (type 3), and 40 (type 4), respectively. Obtained, thickness increases The value is positive, and the thickness decreases. The value is negative, so the thickness is corrected. The following relationship is satisfied within the range of each type of line segment: For the first type of line segment at the expansion angle The second type of line segment at the angle of expansion The third type of line segment at the angle of expansion Type IV line segment at the angle of expansion Corrected thickness They are different from each other, respectively , , , .

[0034] like Figure 2 shown Figure 1 In a locally enlarged structure, according to an embodiment of the dynamic vortex thickness correction method provided by the present invention, the first type line segment and the fourth type line segment have an aspect ratio of [missing information]. During engagement, through the given first clearance on the engagement side. Determine the optimal correction thickness for type I segment 10 and type IV segment 40. , It satisfies the following relationship: Thus, the first and fourth revised sections are obtained.

[0035] Furthermore, and It also satisfies the following relationship: .

[0036] like Figure 3 shown Figure 1 In a locally enlarged structure, according to an embodiment of the static vortex thickness correction method provided by the present invention, the second type line segment and the third type line segment have an aspect ratio of [missing information]. During engagement, the second clearance is achieved by using the second type of line segment and the third type of line segment on the engagement side. Determine the optimal correction thickness for type II segment 20 and type III segment 30. , It satisfies the following relationship: Thus, the second and third revised sections are obtained.

[0037] Furthermore, and The following relationship must be satisfied: .

[0038] For the compressor's first clearance during actual operation When the data cannot be obtained, the lateral deformation of the first type of line segment can be obtained through analysis. Normal deformation of the meshing side of the fourth type line segment Determine the optimal correction thickness for type I and type IV line segments. , It satisfies the following relationship:

[0039]

[0040] Thus, the first and fourth revised paragraphs are obtained;

[0041] Furthermore, and The following relationship must be satisfied: .

[0042] For the compressor's second clearance during actual operation When the data cannot be obtained, the lateral deformation of the second type of line segment can be obtained through analysis. Normal deformation of the meshing side of the third type line segment Determine the optimal correction thickness for type II and type III line segments , It satisfies the following relationship:

[0043]

[0044] Thus, the optimal second and third correction segments are obtained.

[0045] Furthermore, and The following relationship must be satisfied: .

[0046] like Figure 4 shown Figure 1 A locally magnified structure provides another embodiment of the static vortex thickness correction method of the present invention. Firstly, thickness correction is not performed on the third type of line segment, i.e. Only the second type of line segment is processed along the tangent direction. The thickness is corrected to reduce the machining workload on the two vortex surfaces. Secondly, due to the amount of clearance to be corrected... or deformation amount Angle of development corresponding to the point of engagement Changes, therefore, at different angles , Thickness correction amount at the corresponding position , The calculations need to be performed separately according to the methods already described. The corrections for other angle positions will not be elaborated here.

[0047] Another embodiment of the present invention provides a scroll compressor with scroll body thickness correction. Specifically, the scroll teeth of the moving scroll and the stationary scroll of the compressor are any of the scroll bodies described in the above embodiments. It should be noted that other components of the compressor according to the embodiments of the present invention, such as the housing, crankshaft, motor, etc., and the working principle, are known to those skilled in the art and will not be described in detail here.

[0048] As can be seen from the above description, the scroll compressor according to the embodiments of the present invention, by using the modified thickness scroll body of the above embodiments, can reduce the local contact and side clearance size of the scroll body, greatly reduce the friction and wear and internal leakage loss in the compression process, thereby improving the efficiency of the compressor.

[0049] In this invention, the terms "first," "second," and "third," etc., are used for descriptive purposes only to distinguish one entity or operation from another, and should not be construed as indicating or implying the relative importance of the operations or entities. The terms "inner side," "outer side," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are used solely for the convenience of describing the invention and for simplification, and do not simply imply the orientation, construction, or operation of the referred device or element in a specific orientation. Furthermore, the term "comprising" and its variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus component that comprises a list of elements includes those elements, as well as other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0050] It should be noted that the above description is merely an example of a preferred embodiment of the present invention, and the present invention is not limited to the precise structures described above and illustrated in the accompanying drawings. The present invention is intended to cover any modifications, uses, and variations in applicability that follow the general principles of the invention and include common knowledge or customary practices in the art not disclosed herein. The scope of the present invention is limited only by the appended claims.

Claims

1. A method for correcting the thickness of the scroll body in a scroll compressor, characterized in that: The moving vortex body of the moving disk includes a first correction segment, a second correction segment, and a first center line segment; the stationary vortex body of the stationary disk includes a third correction segment, a fourth correction segment, and a second center line segment; the first correction segment, the second correction segment, the third correction segment, and the fourth correction segment are respectively modified in the normal direction by a first-type line segment, a second-type line segment, a third-type line segment, and a fourth-type line segment. Obtained, thickness increases The value is positive, and the thickness decreases. The value is negative, so the thickness is corrected. The following relationship is satisfied within the range of each type of line segment: For the first type of line segment at the development angle The second type of line segment at the angle of expansion The third type of line segment at the angle of expansion Type IV line segment at the angle of expansion Corrected thickness They are different from each other, respectively , , , .

2. The method for correcting the thickness of the scroll body of a scroll compressor according to claim 1, characterized in that: When the first type line segment and the fourth type line segment are at an angle of expansion of During engagement, through the given first clearance on the engagement side. To determine the optimal correction thickness for type I and type IV line segments. , It satisfies the following relationship: Thus, the first and fourth revised sections are obtained.

3. The method for correcting the thickness of the scroll body of a scroll compressor according to claim 2, characterized in that: Corrected thickness of Type I and Type IV line segments , It satisfies the following relationship: .

4. The method for correcting the thickness of the scroll body of a scroll compressor according to claim 1, characterized in that: When the second type line segment and the third type line segment are at an angle of expansion of During engagement, the second gap is provided on the engagement side of the second type line segment and the third type line segment. To determine the optimal correction thickness for type II and type III line segments. , It satisfies the following relationship: Thus, the second and third revised sections are obtained.

5. The method for correcting the thickness of the scroll body of a scroll compressor according to claim 4, characterized in that: Corrected thickness of type II and type III line segments , It satisfies the following relationship: .

6. The method for correcting the thickness of the scroll body of a scroll compressor according to claim 1, characterized in that: Based on the side deformation of the first type of line segment Normal deformation of the meshing side of the fourth type line segment Determine the optimal correction thickness for type I and type IV line segments. , It satisfies the following relationship: Thus, the first and fourth revised sections are obtained.

7. The method for correcting the scroll body thickness of a scroll compressor according to claim 6, characterized in that: Corrected thickness of Type I and Type IV line segments and The following relationship must be satisfied: .

8. The method for correcting the thickness of the scroll body of a scroll compressor according to claim 1, characterized in that: Based on the lateral deformation of the second type of line segment Normal deformation of the meshing side of the third type line segment Determine the optimal correction thickness for type II and type III line segments. , It satisfies the following relationship: Thus, the second and third revised sections are obtained.

9. The method for correcting the thickness of the scroll body of a scroll compressor according to claim 8, characterized in that: Corrected thickness of type II and type III line segments and The following relationship must be satisfied: .

10. A scroll compressor, characterized in that, The scroll bodies of the moving and stationary disks are modified using the scroll body thickness correction method of the scroll compressor as described in any one of claims 1 to 9.

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