A scroll assembly, a scroll compressor and a refrigeration device

Abstract

This utility model provides a scroll assembly, a scroll compressor, and a refrigeration device, relating to the field of scroll compressor structures. The first end of a moving blade is located outside a fixed blade, and the second end of the moving blade is located at the center of the fixed blade. The first end of the moving blade has a first engagement point that meshes with the fixed blade. By providing a thickened portion at the first engagement point, the rigidity of the first end of the moving blade can be effectively improved, thereby effectively reducing the possibility of the moving blade breaking at the first engagement point.

Description

Technical Field

[0001] This application relates to the field of scroll compressor structure, and in particular to a scroll assembly, a scroll compressor and refrigeration equipment. Background Technology

[0002] In practical applications of hermetic scroll compressors, when the moving blades of the moving disc and the fixed blades of the fixed disc form a closed cavity, the fluid within the cavity is compressed. During compression, since forces are reciprocal, the fluid also exerts a force, i.e., a tangential force, on the scroll blades. Simultaneously, because the moving disc rotates during compression, it inevitably experiences centrifugal force. When the moving blades of the moving disc engage with the fixed blades of the fixed disc, both are subjected to radial forces exerted by the other.

[0003] Specifically, such as Figure 1 As shown, under the action of centrifugal force Fr, the moving blade and the fixed blade are brought together to form the intake chamber A. Due to contact deformation at the blade contact point, the moving blade is also subjected to a contact force Fa applied by the fixed blade at the first meshing point. However, the rigidity of the existing moving blade tip is relatively poor, and the magnitude of the contact force Fa it experiences is not equal to the magnitude of the centrifugal force Fr it experiences. In order to counteract the influence of the contact force Fa, the moving blade will undergo contact deformation; when the centrifugal force Fr it experiences is large, the contact force Fa experienced by the moving blade will also increase accordingly. When the contact force Fa exceeds the yield strength that the moving blade can withstand, it will lead to blade breakage. That is, the rigidity of the existing moving blade tip is relatively poor, making it very easy to deform and break at the first meshing point. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a scroll assembly, a scroll compressor and a refrigeration device to solve the problem that the poor rigidity of the moving blade end in the existing scroll assembly makes it easy to break at the first meshing point.

[0005] To achieve the above objectives, this utility model provides a vortex assembly, including a moving disk portion and a fixed disk portion. The moving blades of the moving disk portion and the fixed blades of the fixed disk portion cooperate with each other to form a closed cavity. The first end of the moving blade is located outside the fixed blade, and the second end of the moving blade is located at the center of the fixed blade. The first end of the moving blade has a first engagement point that meshes with the fixed blade, and a thickened portion is formed at the first engagement point.

[0006] Preferably, the moving blade further forms a second engagement point that meshes with the fixed blade, and along the extending direction of the moving blade, the second engagement point is located between the first engagement point and the second end of the moving blade.

[0007] Preferably, the thickened portion extends along the extension direction of the moving blade from the first end to the second end of the moving blade.

[0008] Preferably, along the extending direction of the moving blade, the first end of the thickened portion is located between the first engagement point and the first end of the moving blade or is flush with the first end of the moving blade; the second end of the thickened portion is located between the first engagement point and the second engagement point or is flush with the second engagement point.

[0009] Preferably, the thickness of the thickened portion of the moving blade is set to d, the thickness of the non-thickened portion of the moving blade is set to t, the maximum blade distance of the moving blade is set to P, and the involute generation angle of the vortex assembly is set to α; (t / P) = α / (Π-α); (d / P) > α / (Π-α).

[0010] Preferably, d ≤ 2t.

[0011] Preferably, the thickness of the thickened portion is uniform along the extension direction of the moving blade.

[0012] Preferably, the thickness of the thickened portion is uneven along the extension direction of the moving blade.

[0013] According to a second aspect of the present invention, a scroll compressor is provided, wherein the scroll compressor includes the scroll assembly as described above.

[0014] According to a third aspect of the present invention, a refrigeration device is provided, wherein the refrigeration device includes a scroll compressor as described above.

[0015] According to the scroll assembly, scroll compressor and refrigeration equipment of this utility model, the first end of the moving blade is located outside the fixed blade, and the second end of the moving blade is located at the center of the fixed blade; the first end of the moving blade has a first engagement point that meshes with the fixed blade. By providing a thickened part at the first engagement point, the rigidity of the first end of the moving blade can be effectively improved, thereby effectively reducing the possibility of the moving blade breaking at the first engagement point.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the engagement between the moving blades and the stationary blades in a vortex assembly in the prior art;

[0019] Figure 2 This is a schematic diagram of the cooperation between the moving blade and the stationary blade in the first embodiment of the vortex assembly of this utility model;

[0020] Figure 3 This is a schematic diagram of the cooperation between the moving blade and the stationary blade in the second embodiment of the vortex assembly of this utility model;

[0021] Figure 4 This is a schematic diagram of the cooperation between the moving blade and the stationary blade in the third embodiment of the vortex assembly of this utility model.

[0022] Icons: 1-Fixed blade; 2-Moving blade; 21-Thickened section; 31-First meshing point; 32-Second meshing point. Detailed Implementation

[0023] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0024] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0025] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0026] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0027] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0028] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0029] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0030] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0031] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0032] According to a first aspect of this utility model, a vortex assembly is provided, such as... Figures 2 to 4 As shown, the vortex assembly includes a moving disk portion and a fixed disk portion. The moving blade 2 of the moving disk portion and the fixed blade 1 of the fixed disk portion can cooperate with each other to form a closed cavity. Further, in the vortex assembly, along the radial direction of the vortex assembly, the first end of the moving blade 2 is located outside the fixed blade 1, and the second end of the moving blade 2 is located at the center of the fixed blade 1. Furthermore, the first end of the moving blade 2 has a first engagement point 31 that meshes with the fixed blade 1 (the above components and the assembly position relationship of each component are all prior art and will not be described in detail).

[0033] To reduce the possibility of breakage of the moving blade 2 at the first engagement point 31, a thickened portion 21 is formed at the first engagement point 31 in this embodiment. That is, the rigidity of the first end of the moving blade 2 is increased by locally increasing the thickness of the moving blade 2, thereby improving the ability of the moving blade to resist contact deformation. The specific structure of the above-mentioned parts of the vortex assembly according to this utility model will be described in detail below.

[0034] like Figure 3 As shown, the moving blade 2 also has a second engagement point 32 that meshes with the fixed blade 1. Along the extension direction of the moving blade 2, the second engagement point 32 is located between the first engagement point 31 and the second end of the moving blade 2. This second engagement point 32 is also a structure generated in existing vortex assemblies, and its location and principle will not be described in detail. Further, from the first end to the second end of the moving blade 2, the thickened portion 21 extends along the extension direction of the moving blade 2; even further, along the extension direction of the moving blade 2, the first end of the thickened portion 21 is located between the first engagement point 31 and the first end of the moving blade 2, or the first end of the thickened portion 21 can be flush with the first end of the moving blade 2 to ensure the strengthening effect on the first end of the moving blade 2 (especially at the first engagement point 31); the second end of the thickened portion 21 is located between the first engagement point 31 and the second engagement point 32 or flush with the second engagement point 32 to ensure that the moving blade 2 and the fixed blade 1 do not interfere with each other.

[0035] Furthermore, in this embodiment, the thickness of the thickened portion 21 in the moving blade 2 is set to d, the thickness of the non-thickened portion 21 in the moving blade 2 is set to t, the maximum blade distance of the moving blade 2 is set to P, and the involute generation angle of the vortex assembly is set to α. Then (t / P) = α / (π-α), that is, the ratio of the thickness of the non-thickened portion 21 in the moving blade 2 to the blade distance in conventional vortex design is a constant value (where π is pi). On this basis, (d / P) > α / (π-α), that is, the ratio of the thickness of the thickened portion 21 in the moving blade 2 to the blade distance is greater than this constant value, but the thickness of the thickened portion 21 does not exceed the thickness of the non-thickened portion 21 in the moving blade 2, that is, d≤2t, so as to ensure that the weight of the moving blade 2 is not too large (if the weight of the moving blade 2 is large, it will increase the centrifugal force, thereby weakening the technical effect of stiffness enhancement brought by the thickened portion 21).

[0036] In this embodiment, as Figures 2 to 4 As shown, the specifications of the thickened portion 21, such as its extension length and specific thickness, are not fixed and are determined according to the actual situation to achieve the aforementioned technical effect. Furthermore, the specific thickening method of the thickened portion 21 is also not fixed. For example, it can be achieved by using the outer contour curve of the unthickened moving blade 2 as the design baseline and offsetting the contour of the moving blade 2 by an equidistant distance (e.g., Figures 2 to 3 As shown), at this time, the outer contour curve of the thickened portion 21 unfolds in the same way as the inner contour curve of the moving blade 2, that is, the thickness of the thickened portion 21 is uniform (along the extension direction of the thickened portion 21); or, the thickened portion 21 can also be set as an arc-shaped structure (such as...). Figure 4 (as shown) or a wedge-shaped structure, in which case the thickness of the thickened part 21 is uneven.

[0037] According to the vortex assembly of this utility model, the first end of the moving blade 2 is located outside the fixed blade 1, and the second end of the moving blade 2 is located at the center of the fixed blade 1; the first end of the moving blade 2 is formed with a first engagement point 31 that meshes with the fixed blade 1. By providing a thickened part 21 at the first engagement point 31, the rigidity of the first end of the moving blade 2 can be effectively improved, thereby effectively reducing the possibility of the moving blade 2 breaking at the first engagement point 31.

[0038] According to a second aspect of the present invention, a scroll compressor is provided, wherein the scroll compressor includes the scroll assembly as described above.

[0039] According to a third aspect of the present invention, a refrigeration device is provided, wherein the refrigeration device includes a scroll compressor as described above.

[0040] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. A vortex assembly, comprising a moving disk portion and a fixed disk portion, wherein the moving blades of the moving disk portion and the fixed blades of the fixed disk portion cooperate to form a closed cavity, characterized in that, The first end of the moving blade is located outside the fixed blade, and the second end of the moving blade is located at the center of the fixed blade; the first end of the moving blade has a first engagement point that meshes with the fixed blade, and a thickened portion is formed at the first engagement point.

2. The scroll assembly of claim 1, wherein, The moving blade also has a second engagement point that meshes with the fixed blade. Along the extension direction of the moving blade, the second engagement point is located between the first engagement point and the second end of the moving blade.

3. The scroll assembly of claim 2, wherein, The thickened portion extends along the extension direction of the moving blade from the first end to the second end of the moving blade.

4. The scroll assembly of claim 3, wherein, Along the extending direction of the moving blade, the first end of the thickened portion is located between the first engagement point and the first end of the moving blade or is flush with the first end of the moving blade; the second end of the thickened portion is located between the first engagement point and the second engagement point or is flush with the second engagement point.

5. The scroll assembly of claim 4, wherein, The thickness of the thickened portion of the moving blade is set to d, the thickness of the non-thickened portion of the moving blade is set to t, the maximum blade distance of the moving blade is set to P, and the involute generation angle of the vortex assembly is set to α. (t / P)=α / (Π-α); (d / P)>α / (Π-α).

6. The scroll assembly of claim 5, wherein, d≤2t.

7. The scroll assembly of claim 5, wherein, The thickness of the thickened portion is uniform along the extension direction of the moving blade.

8. The scroll assembly of claim 5, wherein, The thickness of the thickened portion is uneven along the extension direction of the moving blade.

9. A scroll compressor characterized by, The scroll compressor includes a scroll assembly as described in any one of claims 1 to 8.

10. A refrigeration appliance characterized in that, The refrigeration equipment includes the scroll compressor as described in claim 9.

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