Vibration damper for compressor and scroll compressor

Abstract

The invention provides a vibration damping device for a compressor and a scroll compressor, the compressor comprises a scroll part used for compressing working fluid and a thrust plate and a main bearing seat used for supporting the scroll part, the vibration damping device comprises an assembling part and a vibration damping wall part, the vibration damping wall part extends from the assembling part to the tail end of the vibration damping wall part, and the thrust plate and the main bearing seat are used for supporting the scroll part. The damping wall part comprises a damping part section with a tail end in the extending direction of the damping wall part, the thickness of the damping part section is gradually reduced in a power exponent mode in the extending direction of the damping wall part, the damping wall part is arranged to surround the vortex part, and the assembling part is fixed to the vortex part, the thrust plate or the main bearing seat so as to reduce noise generated by the vortex part. According to the vibration reduction device and the scroll compressor, noise reduction and vibration reduction can be conducted on the vibration part of the compressor, and adverse effects on the performance of the compressor and the peripheral structure of the compressor cannot be generated.

Description

Technical Field

[0001] This invention relates to a vibration damping device for compressors, and more particularly, to a vibration damping device for reducing vibration and noise in the scroll component of a scroll compressor. Furthermore, this invention also relates to a scroll compressor incorporating this vibration damping device. Background Technology

[0002] A scroll compressor consists of a scroll component made up of a moving scroll and a stationary scroll. When a scroll compressor is running, its vibration and noise mainly come from the mechanical vibration generated by the relative motion of the moving and stationary scrolls, as well as the aerodynamic noise generated by the airflow when the scroll component exhausts.

[0003] However, current technologies do not directly address vibration and noise reduction for the scroll compressor component; instead, they typically focus on overall compressor vibration and noise reduction. Overall compressor vibration and noise reduction is usually achieved through two methods: adding a silencing design at the compressor's exhaust port or downstream, or installing an isolation component at the compressor's mounting end. Both of these methods may adversely affect compressor performance or the compressor's external structural design.

[0004] Therefore, there is a need for an improved vibration damping device for compressors that can reduce vibration and noise in the compressor, especially the scroll component, while maintaining good compressor performance and facilitating the design of the compressor's external structure and improving its applicability. Summary of the Invention

[0005] This section provides a general overview of the invention, rather than a full disclosure of the invention's complete scope or all its features.

[0006] One of the objectives of this invention is to provide a vibration damping device for a compressor, which is generally arranged around the scroll component and fixed to the scroll component, thrust plate or main bearing housing, thereby reducing the noise generated by the scroll component of the compressor without adversely affecting the compressor performance and without affecting the compressor's external structure.

[0007] Another object of the present invention is to provide a vibration damping device for a compressor, which includes multiple vibration damping channels, and can not only effectively reduce the noise generated by the compressor, especially the scroll component of the compressor, but also absorb and reduce noise at different frequencies.

[0008] Another object of the present invention is to provide a vibration damping device for a compressor, the device being shrouded in a shield shape, thereby effectively reducing the noise generated by the compressor, especially the scroll component of the compressor.

[0009] Another object of the present invention is to provide a scroll compressor that includes a vibration damping device, which can not only reduce the noise generated by the compressor, especially the scroll component of the compressor, but also does not adversely affect the performance of the compressor or the external structure of the compressor.

[0010] According to one aspect of the present invention, a vibration damping device for a compressor is provided, the compressor including a scroll component for compressing a working fluid and a thrust plate and a main bearing housing for supporting the scroll component, wherein the vibration damping device includes an assembly portion and a damping wall portion extending from the assembly portion to an end of the damping wall portion, the damping wall portion including a damping section having an end in the extending direction of the damping wall portion, the thickness of the damping section gradually decreasing exponentially along the extending direction of the damping wall portion, wherein the damping wall portion is arranged to surround the scroll component, and the assembly portion is fixed to the scroll component, the thrust plate or the main bearing housing for reducing noise generated by the scroll component.

[0011] Optionally, the vibration damping device is constructed in the shape of a cover, with the damping wall spaced apart from the vortex component.

[0012] Optionally, the vibration damping wall completely covers the vortex component.

[0013] Optionally, the vibration damping wall is cylindrical or hemispherical.

[0014] Optionally, the vibration damping wall includes a thin-walled region and a thick-walled region in the circumferential direction, wherein the wall thickness of the thin-walled region is less than the wall thickness of the thick-walled region.

[0015] Optionally, the thin-walled region and the thick-walled region are arranged uniformly in the circumferential direction.

[0016] Alternatively, the thin-walled region is formed by creating grooves on the radially inner or radially outer side of the damping wall.

[0017] Optionally, the cross-sectional structure of the groove forming the thin-walled region, taken along a direction orthogonal to the axial direction, is an arc shape, a rectangle, or a combination of an arc shape and a rectangle.

[0018] Alternatively, the thin-walled region may not extend to the end of the damping wall in the axial direction.

[0019] Optionally, an opening is provided in the thin-walled region, extending generally in the axial direction to the end of the damping wall portion. The opening divides the thin-walled region into two independent sub-thin-walled regions and separates two thick-walled regions adjacent to the thin-walled region.

[0020] Alternatively, the vibration damping device may be in the form of a flat disc with the damping wall extending generally in the radial direction or a coiled shape with the damping wall extending generally in the circumferential direction.

[0021] Optionally, the vibration damping wall is constructed as a multi-layer wall, each of which includes a vibration damping section with its own end in the extending direction of the vibration damping wall, and the multi-layer wall is spaced apart from each other to form multiple vibration damping channels.

[0022] Optionally, the thickness of the damping section in each layer of the multi-layer wall gradually decreases along the extension direction of the damping wall with different power functions.

[0023] Optionally, the gap between adjacent layers of the wall in a multi-layer wall is not less than 0.5 mm.

[0024] Optionally, the vortex component includes a fixed vortex and a moving vortex. The fixed vortex includes a fixed vortex end plate, a vortex blade extending from a first side of the fixed vortex end plate and an outer peripheral wall arranged around the vortex blade, and an annular wall extending from a second side of the fixed vortex end plate opposite to the first side. The assembly part is fixed to the outer peripheral surface of the annular wall, the second side of the fixed vortex end plate and / or the outer peripheral surface of the outer peripheral wall.

[0025] Optionally, the vortex component includes a fixed vortex and a moving vortex. The fixed vortex includes a fixed vortex end plate, vortex blades extending from a first side of the fixed vortex end plate, an outer peripheral wall arranged around the vortex blades, and an annular wall extending from a second side of the fixed vortex end plate opposite to the first side. The outer peripheral wall includes a lug extending radially outward. The mounting portion is fixed to the thrust plate and / or the main bearing housing by passing fasteners through the mounting portion, the lugs, and inserting them into the mounting holes of the thrust plate and / or the main bearing housing.

[0026] Optionally, a sleeve is provided on the outer periphery of the fastener. The sleeve passes through the lug and is disposed between the assembly part and the thrust plate or main bearing housing. The fastener and the sleeve together form an axially flexible mounting mechanism, so that the fixed volute installed to the thrust part and / or main bearing housing through the axial mounting mechanism can move axially relative to the moving volute.

[0027] Optionally, the assembly part is constructed as a ring.

[0028] According to another aspect of the present invention, a vibration damping device for a compressor is provided, the vibration damping device being fixed to a vibrating component of the compressor, wherein the vibration damping device includes an assembly portion and a vibration damping wall portion extending from the assembly portion to an end of the vibration damping wall portion, the vibration damping wall portion being constructed as a multi-layer wall portion, each of the multi-layer wall portions including a vibration damping segment having its own end in the extending direction of the vibration damping wall portion, the multi-layer wall portions being spaced apart from each other to form a plurality of vibration damping channels, wherein the thickness of the vibration damping segment of each of the multi-layer wall portions gradually decreases along the extending direction of the vibration damping wall portion with different power functions, in order to reduce noise of different frequencies generated by the vibrating component.

[0029] Optionally, the gap between adjacent layers of the wall in a multi-layer wall is not less than 0.5 mm.

[0030] Optionally, the vibration damping device is disc-shaped, with the damping wall extending generally in the radial direction and the multi-layered wall overlapping at least partially in the axial direction.

[0031] Optionally, the vibration damping device is hood-shaped, with the damping wall extending generally in the axial direction and the multiple wall layers overlapping at least partially in the radial direction.

[0032] Optionally, the vibration damping device is wound in shape, with the damping wall extending generally in the circumferential direction and the multi-layered wall overlapping at least partially in the radial direction.

[0033] Optionally, the assembly part is constructed in a ring shape and located in the center of the vibration damping device, and each layer of the multi-layer wall part is constructed as a rotating arm that unfolds in an involute shape.

[0034] Optionally, the vibration damping section extends from the assembly section to the end.

[0035] Optionally, the vibration damping device is configured as multiple devices, which overlap in the axial direction of the compressor.

[0036] According to another aspect of the present invention, a vibration damping device for a compressor is provided, the vibration damping device being fixed to a vibrating component of the compressor, wherein the vibration damping device includes an assembly portion and a vibration damping wall portion, the vibration damping wall portion extending from the assembly portion to an end of the vibration damping wall portion, the vibration damping wall portion including a vibration damping section having an end in the extending direction of the vibration damping wall portion, the thickness of the vibration damping section gradually decreasing exponentially along the extending direction of the vibration damping wall portion, wherein the vibration damping device is constructed in a cover shape, and the vibration damping wall portion is arranged to surround and spaced apart from the vibrating component.

[0037] Optionally, the vibration damping wall is cylindrical or hemispherical.

[0038] Optionally, the vibrating component is a vortex component.

[0039] Optionally, the vortex component includes a fixed vortex and a moving vortex. The fixed vortex includes a fixed vortex end plate, a vortex blade extending from a first side of the fixed vortex end plate, and an outer peripheral wall arranged around the vortex blade. There is a gap between the radial inner side of the damping wall and the outer peripheral surface of the outer peripheral wall, and the damping wall completely covers the outer peripheral wall of the fixed vortex.

[0040] Optionally, the vibration damping wall includes a thin-walled region and a thick-walled region in the circumferential direction, wherein the wall thickness of the thin-walled region is less than the wall thickness of the thick-walled region.

[0041] Optionally, the thin-walled region and the thick-walled region are arranged uniformly in the circumferential direction.

[0042] Alternatively, the thin-walled region is formed by creating grooves on the radially inner and / or radially outer sides of the damping wall.

[0043] Optionally, the cross-sectional structure of the groove forming the thin-walled region, taken along a direction orthogonal to the axial direction, is an arc shape, a rectangle, or a combination of an arc shape and a rectangle.

[0044] Alternatively, the thin-walled region may not extend to the end of the damping wall in the axial direction.

[0045] Optionally, an opening extending from the assembly portion to the end of the vibration damping wall portion is provided in the thin-walled area, the opening dividing the thin-walled area into two independent sub-thin-walled areas and separating two thick-walled areas adjacent to the thin-walled area.

[0046] Optionally, the vibration damping section includes a first surface and a second surface that are opposite to each other in the thickness direction of the vibration damping wall, wherein the profile curves of the first surface and / or the second surface are power curves.

[0047] Optionally, the first surface is symmetrical to the second surface.

[0048] Optionally, the vibration damping wall is made of damping metal or non-metallic material.

[0049] Optionally, the vibration damping device includes a damping element disposed at or near the end.

[0050] Optionally, the damping element is made of a material with damping properties higher than those of the material used in the damping wall.

[0051] Alternatively, the damping element may be constructed as a block and assembled onto the vibration damping wall, or the damping element may be constructed as a layer and coated onto the vibration damping wall.

[0052] Optionally, the vibration damping wall has a cut-off thickness at the end, which is not less than 0.1 mm.

[0053] According to another aspect of the invention, a scroll compressor is provided, wherein the scroll compressor includes the vibration damping device as described above.

[0054] In general, the vibration damping device for a compressor according to the present invention, and the scroll compressor including the vibration damping device, bring at least one of the following beneficial effects: Since the vibration damping device includes a damping wall portion having a damping section whose thickness gradually decreases exponentially along the extension direction of the damping wall portion, it can effectively absorb wave energy, achieving vibration reduction and noise reduction; furthermore, since the vibration damping device is fixed to the scroll component, thrust plate, or main bearing housing, it not only reduces the noise generated by the scroll component of the compressor, but also does not adversely affect the compressor performance or the compressor's peripheral structure; furthermore, since the vibration damping device includes multiple damping channels, it can reduce noise at different frequencies, further improving the vibration reduction and noise reduction effect; furthermore, since the vibration damping device is constructed in a cover shape, it not only improves the vibration reduction and noise reduction effect, but also has a simple structure, is easy to manufacture and install, and can fully utilize the internal space of the compressor without affecting the compressor's peripheral structure. Attached Figure Description

[0055] The features and advantages of one or more embodiments of the present invention will become more readily apparent from the following description with reference to the accompanying drawings. The drawings provided herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. The drawings are not drawn to scale and some features may be enlarged or reduced to show details of specific parts. In the drawings:

[0056] Figure 1 This is a perspective view of the vibration damping device and the fixed vortex assembly according to the first embodiment of the present invention;

[0057] Figure 2 This is a longitudinal cross-sectional view of the vibration damping device and the fixed vortex according to the first embodiment of the present invention;

[0058] Figure 3 This is an exploded perspective view of the vibration damping device and the fixed vortex according to the first embodiment of the present invention;

[0059] Figure 4a and Figure 4b These are longitudinal cross-sectional views of vibration damping devices according to different modifications of the first embodiment of the present invention;

[0060] Figure 5 This is a perspective view of a vibration damping device according to a second embodiment of the present invention;

[0061] Figure 6 This is a longitudinal cross-sectional view of the vibration damping device according to the second embodiment of the present invention;

[0062] Figure 7 This is a perspective view of a vibration damping device according to a third embodiment of the present invention;

[0063] Figure 8This is a longitudinal cross-sectional view of the vibration damping device according to the third embodiment of the present invention;

[0064] Figure 9 This is a perspective view of the vibration damping device and the fixed vortex according to the fourth embodiment of the present invention;

[0065] Figure 10 This is a longitudinal cross-sectional view of the vibration damping device and the fixed vortex according to the fourth embodiment of the present invention;

[0066] Figure 11 This is an exploded perspective view of the vibration damping device, fixed vortex, main bearing housing, etc., according to the fourth embodiment of the present invention.

[0067] Figure 12 This is a longitudinal cross-sectional view of the vibration damping device, fixed vortex, main bearing housing, etc., assembled according to the fourth embodiment of the present invention.

[0068] Figure 13 This is an exploded perspective view of the vibration damping device and the fixed vortex according to the fifth embodiment of the present invention;

[0069] Figure 14 This is a longitudinal cross-sectional view of the vibration damping device and the fixed vortex assembly according to the fifth embodiment of the present invention;

[0070] Figure 15 This is a longitudinal cross-sectional view of the vibration damping device according to the fifth embodiment of the present invention;

[0071] Figure 16 This is an exploded perspective view of the vibration damping device and the fixed vortex according to the sixth embodiment of the present invention;

[0072] Figure 17 This is a longitudinal cross-sectional view of the vibration damping device and the fixed vortex assembly according to the sixth embodiment of the present invention; and

[0073] Figure 18 This is a top view of a vibration damping device according to a sixth embodiment of the present invention. Detailed Implementation

[0074] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. This description is merely exemplary and does not constitute a limitation on the present invention and its applications.

[0075] The scroll compressor mainly includes a housing, a compression mechanism, and a main bearing housing 40 (see...). Figure 11 , Figure 12 ), drive shaft 50 (see Figure 11 , Figure 12The compressor includes a fixed scroll 20 and a moving scroll 30 (the fixed and moving scrolls are also collectively referred to as scroll components). The motor is configured to rotate the drive shaft 50, which then drives the moving scroll 30 to revolve relative to the fixed scroll 20 (i.e., the central axis of the moving scroll revolves around the central axis of the fixed scroll, but the moving scroll does not rotate around its central axis) to compress the working fluid.

[0076] like Figure 1 , Figure 2 As shown, in a first embodiment of the present invention, the fixed vortex 20 may include a fixed vortex end plate 21, and a first side surface of the fixed vortex end plate 21 (in...) Figure 2 The spiral vortex blade 22 (shown as the lower side) extends axially from the same side surface of the fixed vortex end plate 21, along with an outer peripheral wall 23 surrounding the vortex blade 22. The moving vortex 30 (in...) Figure 11 and Figure 12 (As shown in the image) includes a moving scroll end plate and a driven scroll end plate on one side surface (in...) Figure 12 The spiral vortex blades (shown as the upper side) extend outwards. The vortex blades 22 of the fixed vortex 20 mesh with the vortex blades of the moving vortex 30, thereby forming a series of compression cavities with varying volumes between them to achieve compression of the working fluid.

[0077] like Figure 1 and Figure 2 As shown, the fixed scroll 20 also includes an exhaust port 25 formed at the center of the fixed scroll end plate 21, through which the working fluid compressed via a series of compression chambers between the fixed scroll 20 and the moving scroll 30 can be discharged. Typically, a back pressure chamber is also provided on the second side opposite to the first side of the fixed scroll end plate 21 to achieve axial sealing between the fixed scroll 20 and the moving scroll 30. To define the back pressure chamber, the fixed scroll 20 includes a fixed scroll hub 26 and an annular wall 24 extending from the second side of the fixed scroll end plate 21. The fixed scroll hub 26 surrounds the exhaust port 25, and the annular wall 24 surrounds the fixed scroll hub 26. The back pressure chamber is formed by the space surrounded by the fixed scroll end plate 21, the fixed scroll hub 26, and the annular wall 24 and is closed by a sealing assembly disposed therein. The back pressure chamber can be fluidly connected to a medium-pressure chamber in the compression chamber between the moving vortex 30 and the fixed vortex 20 through an axially extending through hole formed in the fixed vortex end plate 21, thereby providing axial sealing pressure to the fixed vortex 20.

[0078] To reduce the mechanical vibration generated during the circumferential motion of the moving vortex 30 relative to the stationary vortex 20, and the aerodynamic noise generated when the working fluid is discharged from the exhaust port 25, the first embodiment of the present invention further includes a vibration damping device 100. See also Figure 1 , Figure 2The vibration damping device 100 includes an assembly portion 102 and a vibration damping wall portion 104 extending from the assembly portion 102 to a damping wall portion end 103 (free tip). That is, the damping wall portion 104 includes a starting end connected to the assembly portion 102 and an ending end 103 opposite to the starting end. In the extension direction from the starting end to the ending end 103, the damping wall portion 104 includes a uniform segment 107 having the starting end and a damping segment 105 having the ending end 103, wherein the thickness of the uniform segment 107 remains constant, while the thickness of the damping segment 105 gradually decreases exponentially along the extension direction of the damping wall portion 104. That is, the thickness of the damping segment 105 decreases according to the following exponential function:

[0079] h(x) = εx n

[0080] Where x represents the distance between any point on the vibration damping section and its end in the extension direction of the vibration damping wall, h(x) represents the thickness of the vibration damping section at that point, ε is the curve coefficient, and n is the power exponent and n≥2.

[0081] It should be noted that the "thickness" here refers to the dimension of the damping wall portion 104 in the direction perpendicular to its extension direction, for example, in... Figure 2 The dimensions of the vibration damping wall portion 104 in the radial direction of the compressor are shown in the figure. Of course, those skilled in the art will understand that the vibration damping wall portion 104 may also exclude the uniform section 107 and only include the vibration damping section 105, that is, the vibration damping section 105 extends from the starting end to the end end 103 of the vibration damping wall portion 104, so as to extend the vibration damping section as much as possible, so as to achieve better vibration damping and noise reduction effect.

[0082] The vibration damping section 105 (or vibration damping wall 104) has a cut-off thickness at the end 103, which can be determined according to the reflection coefficient and is preferably not less than 0.1 mm, thereby ensuring effective suppression of vibration.

[0083] Preferably, the vibration damping device further includes a damping element 106 disposed near the end 103 to effectively dissipate energy fluctuations accumulated in the vibration damping section 105, thereby significantly reducing the reflection coefficient caused by the truncation at the end 103, achieving good energy absorption and vibration damping / noise reduction effects. Figure 1 and Figure 2 As shown, the damping element 106 can be constructed as an annular strip and assembled onto the vibration damping wall portion 104. For example, the damping element 106 can be attached to the radial outer surface of the vibration damping wall portion 104. Preferably, the damping element 106 is disposed at the vibration damping section 105, and more preferably, the damping element 106 is disposed at the end 103, thereby improving the vibration damping and noise reduction effect of the vibration damping device.

[0084] Furthermore, those skilled in the art will understand that the damping element 106 may also be different from... Figure 1 , Figure 2 The structure, manner, and position are arranged as shown. For example, the damping element 106 can be in the form of discrete strips, the damping element 106 can be constructed as layers and coated onto the damping wall portion 104, the damping element 106 can be disposed at the uniform section 107, or the damping element 106 can be disposed on the radially inner side of the damping wall portion 104 or on both the radially inner and radially outer sides of the damping wall portion 104 (i.e., the damping element 106 can be disposed on at least one of the two surfaces of the damping wall portion 104 that are opposite to each other in their thickness direction).

[0085] See Figures 1 to 3 The vibration damping device 100 is generally dome-shaped, with the damping wall 104 spaced apart from the vortex component (fixed vortex 20) to better absorb energy and reduce the outward radiation of noise generated by the vortex component. Specifically, the mounting portion 102 is annular and arranged above the fixed vortex end plate 21 around the annular wall 24. The mounting portion 102 can extend generally axially and be fixed to the outer peripheral surface of the annular wall 24 and / or the second side surface of the fixed vortex end plate 21. In the absence of a back pressure cavity and thus no annular wall 24, the mounting portion 102 can also be fixed to the outer peripheral surface of the fixed vortex hub portion 26. Alternatively, the mounting portion 102 can be arranged around the outer peripheral wall 23 of the fixed vortex 20 and fixed to the outer peripheral surface of the outer peripheral wall 23. In some embodiments, the mounting portion can even be fixed to the moving vortex. The damping wall portion 104 of the vibration damping device 100 is arranged to surround the vortex component (fixed vortex 20), and there is a gap between the radially inner surface of the damping wall portion 104 and the outer peripheral surface of the outer peripheral wall 23 of the fixed vortex 20. That is, the damping wall portion 104 at least partially covers the vortex component. Preferably, the damping wall portion 104 completely covers the outer peripheral wall 23 of the fixed vortex 20, that is, when viewed from the radially outer side to the radially inner side, the damping wall portion 104 completely covers the outer peripheral wall 23, thereby providing a good shielding effect for sound wave radiation within the coverage area.

[0086] Preferably, for ease of manufacturing, installation, better matching of the compressor's internal space, and better prevention of sound wave radiation propagation, the vibration damping wall 104 is cylindrical, for example... Figure 1 The cylindrical shape is shown. Alternatively, the damping wall 104 can also be partially spherical, such as hemispherical.

[0087] exist Figures 1 to 3 The diagram shows a first embodiment of the invention, in which the damping section 105 includes first surfaces opposite to each other in the thickness direction of the damping wall section 104 (in... Figure 2 The radial inner surface is shown in the diagram, and the second surface is shown in the diagram. Figure 2(shown as the radially outer surface), wherein the profile curve of the first surface is a power-law curve. That is, a first surface with a power-law profile curve can be formed by power-law cutting on the radially inner surface of the damping wall portion 104, such that the damping wall portion 104 forms a damping segment 105 whose thickness gradually decreases exponentially along the extension direction of the damping wall portion; that is, in the longitudinal section (the section showing the thickness), the profile curve of the first surface is a power-law curve. However, those skilled in the art will understand that, as... Figure 4a As shown, a second surface with a power-law profile can also be formed by power-law cutting on the radially outer side of the damping wall 104. Alternatively, as... Figure 4b As shown, power-law shearing is performed on both the radially outer and radially inner sides of the vibration-damping wall 104, so that the contour curves of both the first and second surfaces are power-law curves. Figure 4b In the modified example shown, preferably, the first surface and the second surface are symmetrical about the thickness centerline of the damping section 105 to enhance the effect of vibration reduction and noise reduction.

[0088] Preferably, the damping wall 104 is made of damping metal or non-metal material, and the damping element 106 is made of high damping material (or the damping element 106 is made of a material with damping properties higher than those of the material of the damping wall 104), thereby achieving the effect of absorbing vibration and dissipating energy.

[0089] In the first embodiment of the present invention, the mechanical vibrations generated by the relative motion of the stationary and moving scrolls, as well as the aerodynamic noise generated by the airflow during exhaust, propagate along the vibration damping device, particularly along the damping wall approximately axially. Due to the specific structure of the damping section and the installation of damping components, the wave energy of the vibrations and noise can be effectively dissipated, thereby achieving a good vibration reduction and noise reduction effect. Furthermore, this vibration damping device only dissipates the vibration energy of the scroll component and reduces noise, without affecting the performance of the compressor. In addition, this vibration damping device utilizes the internal space of the scroll compressor, eliminating the need for additional design adjustments to the compressor's external mechanisms, effectively improving the space utilization rate of the scroll compressor.

[0090] Figure 5 and Figure 6The second embodiment of the present invention is shown. In the second embodiment, the basic structure and principle of the scroll compressor, as well as the principle, basic structure, installation location, materials, and installation method of the vibration damping device, are the same as those of the first embodiment of this application, and will not be repeated here. The difference is that in the first embodiment of the present invention, the vibration damping device 100 is generally shaped like a cover, and the vibration damping wall 104 has a uniform thickness in the circumferential direction, so the vibration damping wall 104 is used as a whole for vibration damping and noise reduction. In the second embodiment of the present invention, the vibration damping device 200 is generally shaped like a cover, and the vibration damping wall 204 includes a thin-walled region 208 and a thick-walled region 210 in the circumferential direction, wherein the wall thickness of the thin-walled region 208 is less than the wall thickness of the thick-walled region 210 (e.g., ...). Figure 5 and Figure 6 As shown, the "wall thickness" here refers to the radial dimension of the damping wall. That is, the damping device 200 has a non-uniform thickness in the circumferential direction.

[0091] like Figure 5 and Figure 6 As shown, the thin-walled region 208 is formed by creating a groove on the radially inner surface of the damping wall portion 204. Those skilled in the art will understand that the thin-walled region 208 can also be formed by creating a groove on the radially outer surface of the damping wall portion 204, or on both the radially inner and radially outer surfaces. The cross-section of the groove forming the thin-walled region 208, taken in a direction orthogonal to the axial direction, can be constructed as an arc, a rectangle, or a combination of arcs and rectangles. For example... Figure 5 As shown, the middle portion of the groove is rectangular while the two sides are arc-shaped. The dimensions of the thin-walled region 208 and the thick-walled region 210 can be determined according to the structural strength and acoustic noise reduction requirements of the design. In the axial direction, a portion of the thin-walled region 208 is formed in the uniform section 207 of the vibration-damping wall portion 204 (or the thin-walled region 208 may occupy a portion of the uniform section 207), while another portion is formed in the vibration-damping section 205 (or the thin-walled region 208 may occupy a portion of the vibration-damping section 205). Furthermore, those skilled in the art will understand that the thin-walled region 208 can be as follows: Figure 5 As shown, it extends only in the axial direction, but it can also extend from the assembly part (i.e., the thin-walled region is formed not only at the axial portion of the damping wall part, but also at the curved portion of the damping wall part between the assembly part and the axial portion of the damping wall part). Because the thin-walled region 208 transforms the originally continuous first surface in the circumferential direction (i.e., the surface of the damping section 205 with a profile curve exhibiting a power-law curve), Figure 5 , Figure 6The radial inner surface of the damping section 205 (shown in the diagram) is discontinuous, causing the damping wall to no longer function as a single unit for vibration reduction and noise reduction in the circumferential direction. Specifically, due to the different structures of adjacent thin-walled and thick-walled regions, their amplitudes differ during wave propagation, resulting in mutual restraint and cancellation, thereby further enhancing the vibration reduction and noise reduction effect. Simultaneously, the thin-walled region 208 increases the flexibility of the damping wall 204 and absorbs some of the vibration energy, while the thick-walled region 210 acts as a reinforcing rib, ensuring the structural strength of the vibration damping device 4 and improving its service life.

[0092] Preferably, the thin-walled region 208 does not extend to the end 203 of the damping wall portion 204 in the axial direction, thereby ensuring the integrity of the damping wall portion in the axial direction, so as to facilitate the assembly or coating of the damping element 206 and to reduce the outward radiation of noise generated by the vortex component.

[0093] Preferably, such as Figure 5 As shown, the thin-walled region 208 and the thick-walled region 210 are uniformly arranged in the circumferential direction to maximize the vibration reduction and noise reduction effect. That is, the circumferential dimensions of each thin-walled region 208 are consistent, and the circumferential dimensions of each thick-walled region 210 are consistent, thus ensuring that the spacing between adjacent thin-walled regions and adjacent thick-walled regions is consistent. Of course, the thin-walled region 208 and the thick-walled region 210 can also be arranged non-uniformly according to noise reduction requirements.

[0094] Based on the second embodiment of the present invention, an opening can be added to the thin-walled region to divide the circumferentially continuous damping wall into multiple independent sub-dampening wall portions, thereby achieving different vibration reduction and noise reduction effects through multiple independent sub-dampening wall portions. Specifically, in Figure 7 and Figure 8 According to the third embodiment of the present invention, the vibration damping device 300 is generally dome-shaped, and the vibration damping wall portion 304 includes a thin-walled region 308 and a thick-walled region 310 in the circumferential direction, wherein the wall thickness of the thin-walled region 308 is less than the wall thickness of the thick-walled region 310 (e.g., ...). Figure 7 and Figure 8As shown, "wall thickness" here refers to the radial dimension of the damping wall portion. An opening 309 extending to the end 301 of the damping wall portion 304 is provided at the thin-walled region 308. The opening 309 extends approximately axially (or in other words, the opening 309 is located at the axial portion of the damping wall portion 304, and correspondingly, the thin-walled region 308 is also formed at the axial portion of the damping wall portion 304), thereby dividing the thin-walled region 308 into two independent sub-thin-walled regions 3081 and 3082, and separating the two thick-walled regions 310 adjacent to the thin-walled region 308. Thus, one thick-walled region 310 and the two adjacent and connected sub-thin-walled regions 3081 and 3082 constitute an independent sub-dampening wall portion. Since the multiple sub-dampening wall portions are independent of each other, different structural designs can be made for each sub-dampening wall portion, thereby utilizing multiple sub-dampening wall portions to reduce vibration noise at different frequencies, achieving better noise reduction effects.

[0095] Figures 9 to 12 A fourth embodiment of the present invention is shown. In this fourth embodiment, the basic structure and principle of the scroll compressor, as well as the principle, basic structure, installation position, and materials of the vibration damping device, are the same as those in the first embodiment of this application, and will not be repeated here. The difference is that in the first embodiment of the present invention, the vibration damping device 100 is fixed to the fixed scroll 20 by the mounting part 102, and the vibration damping wall part 104 extends from top to bottom. In the fourth embodiment of the present invention, the vibration damping device 400 is fixed to the main bearing seat 40 for supporting the scroll component by the mounting part 402, and the vibration damping wall part 404 extends from bottom to top.

[0096] like Figure 9 and Figure 10 As shown, the vibration damping device 400 is constructed in the shape of a cover, including an assembly portion 402 and a damping wall portion 404 extending from the assembly portion 402 to an end portion 403 (free tip). The damping wall portion 404 includes a damping section 405 having the end portion 403, the thickness of which gradually decreases exponentially along the extending direction of the damping wall portion 404. The damping section 405 (or the damping wall portion 404) has a truncated thickness at the end portion 403.

[0097] Specifically, the damping wall portion 404 extends generally axially upward from the mounting portion 402, thereby arranging itself around the fixed scroll 20. A gap exists between the radially inner surface of the damping wall portion 404 and the outer peripheral surface of the outer peripheral wall 23 of the fixed scroll 20. The mounting portion 402 can be constructed as annular and arranged to extend radially. The mounting portion 402 is provided facing the lug portion 27 of the fixed scroll 20 and is axially stacked above the lug portion 27. The lug portion 27 is a radially outwardly protruding portion of the outer peripheral wall 23 of the fixed scroll 20, located at the end of the outer peripheral wall 23 opposite to the end plate 21 of the fixed scroll. An axial through hole is provided in the lug portion 27 for receiving the axially flexible mounting mechanism 60 to connect the fixed scroll 20 to the main bearing housing 40.

[0098] It should be noted that, although, as described above, the back pressure chamber is required to provide an axial seal between the moving and stationary scrolls during normal operation of the scroll compressor, when the pressure in the compression chamber of the scroll compressor is too high, the fluid in the compression chamber needs to leak to the low-pressure side through the gaps between the tip of the stationary scroll's helical blades and the end plate of the moving scroll, as well as the gaps between the tip of the moving scroll's helical blades and the end plate of the stationary scroll, to achieve unloading, thereby providing axial flexibility for the scroll compressor. The axial flexibility mounting mechanism 60 is used to achieve the axial flexibility of the compressor.

[0099] like Figure 11 and Figure 12As shown, the main bearing housing 40 has an axially extending boss 42 on its radially outermost side, which is axially aligned with the lug 27 of the corresponding fixed scroll 20. The axial flexible mounting mechanism 60 includes a fastener 61 (shown as a bolt in this embodiment) and a sleeve 62 located on the outer periphery of the fastener 61. The fastener 61 has a shank and a head at one end of the shank. Both the shank of the fastener 61 and the sleeve 62 can pass through the lug 27, and the other end of the shank of the fastener 61 opposite to the head can be inserted into the mounting hole of the boss 42 and tightened. In particular, the assembly part 402 has a through hole at a position corresponding to the axial through hole of the lug 27. The assembly part 402 is fixed to the main bearing housing 40 by passing the fastener 61 through the through hole of the assembly part 402 and the axial through hole of the lug 27 and inserting it into the mounting hole of the main bearing housing 40, and the fixed scroll 20 is also mounted to the main bearing housing 40. After installation, the head of the fastener 61 contacts the upper surface of the mounting portion 402, the lower surface of the mounting portion 402 contacts the upper surface of the lug 27 and the upper end face of the sleeve 62, and the lower end face of the sleeve 62 contacts the upper surface of the boss 42. In other words, the mounting portion 402 is sandwiched between the head of the fastener 61 and the sleeve 62, and the sleeve 62 is positioned between the mounting portion 402 and the boss 42 of the main bearing housing 40, thereby fixing the mounting portion 402 relative to the main bearing housing 40. Furthermore, by defining the position of the fastener head, and thereby defining the position of the mounting portion 402, the fixed worm gear 20 can move a predetermined distance axially.

[0100] Preferably, the vibration damping wall portion 404 may also have a thin-walled region 407 similar to the second and third embodiments of the present invention. On the one hand, it can achieve similar effects to the second and third embodiments of the present invention. On the other hand, the axial flexible mounting mechanism 60 can be installed via the thin-walled region 407. That is, the thin-walled region 407 can provide installation space for the axial flexible mounting mechanism 60, making the installation process more convenient.

[0101] Although in this fourth embodiment the vibration damping device is fixed to the main bearing housing, those skilled in the art will understand that for some compressors with a separate thrust plate that directly supports the scroll component, the vibration damping device may also be fixed to the thrust plate, or to both the main bearing housing and the thrust plate. Furthermore, in some compressors, the thrust plate and the main bearing housing are formed as one unit. Additionally, although in this fourth embodiment the vibration damping device is fixed to the main bearing housing by an axially flexible mounting mechanism, those skilled in the art will understand that the vibration damping device may also be directly fixed to the main bearing housing and / or the thrust plate by separate fasteners or other means.

[0102] According to the fourth embodiment of the present invention, not only can the effects obtained by the first to third embodiments of the present invention be obtained, but also since the vibration damping device is installed to the main bearing housing by means of an axial flexible mounting mechanism, no additional installation tools and components are required, which further simplifies the installation of the vibration damping device and makes full use of the space inside the compressor.

[0103] Figures 13 to 15 The fifth embodiment of the present invention is shown. In the fifth embodiment, the basic structure and principle of the scroll compressor, as well as the principle, location, materials, and installation method of the vibration damping device, are the same as those of the first embodiment of this application, and will not be repeated here. The difference is that in the first embodiment of the present invention, the vibration damping device 100 is constructed as a cover, while in the fifth embodiment of the present invention, the vibration damping device 500 is constructed as a flat plate.

[0104] See Figure 13 , Figure 14 The vibration damping device 500 includes an assembly portion 502 and a vibration damping wall portion 504 extending from the assembly portion 502 to the end (free tip) of the vibration damping wall portion. Preferably, the vibration damping wall portion 504 is constructed as a multi-layered wall portion, each layer extending in mutually parallel directions. Figure 15 As shown, the vibration damping wall portion 504 includes a first wall portion 5041, a second wall portion 5042, and a third wall portion 5043 extending generally in the radial direction, which at least partially overlap in the axial direction. The first wall portion 5041 is located below the second wall portion 5042, the second wall portion 5042 is located below the third wall portion 5043, and the radial extension length of the first wall portion 5041 is greater than that of the second wall portion 5042, and the radial extension length of the second wall portion 5042 is greater than that of the third wall portion 5043, thereby making the vibration damping device 500 have a multi-layered disc-shaped pagoda shape to facilitate processing and installation and to adapt to the internal space of the compressor. However, those skilled in the art will understand that the vibration damping device is not limited to this shape; for example, the radial extension lengths of the multi-layered vibration damping wall portions of the vibration damping device may be completely or partially the same, and the vibration damping device may also include only a single-layered disc-shaped vibration damping wall portion.

[0105] See Figure 15The first wall portion 5041, the second wall portion 5042, and the third wall portion 5043 of the vibration damping wall portion 504 each include a starting end connected to the assembly portion 502 and a first end portion 5031, a second end portion 5032, and a third end portion 5033 opposite to their respective starting ends. In the extension direction from their respective starting ends to their respective ends, the first wall portion 5041 includes a first uniform section 5071 having a corresponding starting end and a first vibration damping section 5051 having a first end portion 5031; the second wall portion 5042 includes a second uniform section 5072 having a corresponding starting end and a second vibration damping section 5052 having a second end portion 5032; and the third wall portion 5043 includes a third uniform section 5073 having a corresponding starting end and a third vibration damping section 5053 having a third end portion 5033. The thicknesses of the first uniform section 5071, the second uniform section 5072, and the third uniform section 5073 remain constant, while the thicknesses of the first damping section 5051, the second damping section 5052, and the third damping section 5053 gradually decrease exponentially along the extension direction of the damping wall section 504. Of course, those skilled in the art will understand that one or more of the wall sections may exclude the uniform sections and only include the damping sections, i.e., the damping sections extend from the beginning to the end of the damping wall section to maximize the length of the damping sections and improve the vibration reduction and noise reduction effect. The first damping section 5051, the second damping section 5052, and the third damping section 5053 (or the damping wall section 504) have a truncated thickness at their respective ends, which can be determined based on the reflection coefficient and is preferably not less than 0.1 mm, thereby ensuring effective vibration suppression.

[0106] Preferably, the vibration damping device further includes a first damping member 5061 disposed near the first end 5031, a second damping member 5062 disposed near the second end 5032, and a third damping member 5063 disposed near the third end 5033, so as to effectively dissipate the energy fluctuations accumulated in the first damping section 5051, the second damping section 5052, and the third damping section 5053, thereby significantly reducing the reflection coefficient caused by the truncation at the end, achieving good energy absorption and vibration reduction / noise reduction effects. Figures 13 to 15 As shown, the first damping element 5061, the second damping element 5062, and the third damping element 5063 can all be constructed as annular strips and respectively assembled onto the first wall portion 5041, the second wall portion 5042, and the third wall portion 5043, for example, by being respectively adhered to the upper surfaces of the first wall portion 5041, the second wall portion 5042, and the third wall portion 5043. The first damping element 5061, the second damping element 5062, and the third damping element 5063 can also be constructed as other forms, such as coatings, and can be disposed on two surfaces opposite to each other in their thickness direction in the uniform section or the damping section (in...). Figure 14 At least one of the surfaces shown in the diagram (upper and lower surfaces).

[0107] like Figure 14 , Figure 15 As shown, the assembly portion 502 is annular and arranged above the fixed vortex end plate 21 around the annular wall 24. The assembly portion 502 can extend generally axially and be fixed to the outer peripheral surface of the annular wall 24 and / or the second side surface of the fixed vortex end plate 21. In the absence of a back pressure cavity and thus no annular wall 24, the assembly portion 502 can also be fixed to the outer peripheral surface of the fixed vortex hub portion 26. Alternatively, the assembly portion 502 can be arranged around the outer peripheral wall 23 of the fixed vortex 20 and fixed to the outer peripheral surface of the outer peripheral wall 23. The damping wall portion 504 is arranged around the vortex component (fixed vortex 20). The multiple layers of the damping wall portion 504 are spaced apart from each other to form multiple damping channels. Preferably, the gap between adjacent layers of walls is not less than 0.5 mm to ensure the propagation and dissipation of vibrations. For example, in the fifth embodiment of the invention, the first wall portion 5041, the second wall portion 5042, and the third wall portion 5043 each form three damping channels. Because the multi-layered wall structure forms multiple vibration damping channels, when the vibration and noise generated by the movement of the vortex component propagate along multiple vibration damping channels, they can be absorbed and dissipated more effectively than a single vibration damping channel, thereby improving the vibration damping and noise reduction effect of the vibration damping device.

[0108] Preferably, the thicknesses of the first damping section 5051, the second damping section 5052, and the third damping section 5053 gradually decrease along the extension direction of the damping wall portion 504 with different power-law functions to reduce noise of different frequencies generated by the vortex component. For example, the thicknesses of the first damping section 5051, the second damping section 5052, and the third damping section 5053 gradually decrease along the extension direction with completely different power-law functions. That is, the thickness of at least one of the first damping section 5051, the second damping section 5052, and the third damping section 5053 gradually decreases along the extension direction with a different power-law function than the other damping sections.

[0109] Furthermore, at least one of the thicknesses of the first uniform section 5071, the second uniform section 5072, and the third uniform section 5073 is different from the thicknesses of the other uniform sections, and / or at least one of the cut-off thicknesses of the first damping section 5051, the second damping section 5052, and the third damping section 5053 is different from the cut-off thicknesses of the other damping sections, and / or at least one of the extension lengths of the first damping section 5051, the second damping section 5052, and the third damping section 5053 is different from the extension lengths of the other damping sections, thereby generating different damping effects through different damping channels.

[0110] Furthermore, those skilled in the art will understand that the thicknesses of the first uniform section 5071, the second uniform section 5072, and the third uniform section 5073 can be set to be the same, and / or the cut-off thicknesses of the first damping section 5051, the second damping section 5052, and the third damping section 5053 can be set to be the same, and / or the extension lengths of the first damping section 5051, the second damping section 5052, and the third damping section 5053 can be set to be the same, thereby obtaining an enhanced absorption effect for the target noise frequency.

[0111] Similar to the first embodiment according to the invention, each damping segment 5051, 5052, 5053 each includes a first surface that is opposite to each other in the thickness direction of each wall layer (in Figure 15 The lower axial surface is shown in the diagram, and the second surface is shown in the diagram. Figure 15 The image shows the axial upper surface, wherein the profile curve of the first surface of each damping section 5051, 5052, 5053 is a power-law curve. However, those skilled in the art will understand that the profile curves of the first and / or second surfaces of each damping section 5051, 5052, 5053 can all be power-law curves. Preferably, the profile curves of the same side surface of each damping section 5051, 5052, 5053 are power-law curves, which facilitates processing and installation and improves the vibration reduction and noise reduction effect. Preferably, the power-law curves corresponding to the damping sections of each wall layer are designed for the required vibration damping frequency, so that the damping device has the ability to dampen multiple vibration frequencies.

[0112] Figures 16 to 18 The sixth embodiment of the present invention is shown. In the sixth embodiment, the basic structure and principle of the scroll compressor, as well as the principle, location, materials, and installation method of the vibration damping device, are the same as those of the first embodiment of this application, and will not be repeated here. The difference is that in the first embodiment of the present invention, the vibration damping device 100 is constructed in a cover shape, while in the fifth embodiment of the present invention, the vibration damping device 600 is constructed in a wound shape.

[0113] See Figure 18 The vibration damping device 600 includes an assembly portion 602 and a vibration damping wall portion 604 extending from the assembly portion 602 to the end (free tip) of the vibration damping wall portion. The vibration damping wall portion 604 is constructed as a multi-layered wall portion, each layer extending in mutually parallel directions. Specifically, the vibration damping wall portion 604 includes a first wall portion 6041 and a second wall portion 6042 extending generally in a circumferential direction, the first wall portion 6041 and the second wall portion 6042 at least partially overlapping in the radial direction.

[0114] See Figure 16 , Figure 17The first wall portion 6041 and the second wall portion 6042 of the vibration damping wall portion 604 each include a starting end connected to the assembly portion 602 and a first end portion 6031 and a second end portion 6032 opposite to their respective starting ends. In the extension direction from their respective starting ends to their respective ends, the first wall portion 6041 includes a first uniform section having a corresponding starting end and a first damping section 6051 having a first end portion 6031; the second wall portion 6042 includes a second uniform section having a corresponding starting end and a second damping section 6052 having a second end portion 6032. The thicknesses of the first uniform section and the second uniform section remain constant, while the thicknesses of the first damping section 6051 and the second damping section 6052 gradually decrease exponentially along the extension direction of the vibration damping wall portion 604. Of course, those skilled in the art will understand that one or more of the wall layers may not include the uniform section but only the vibration-damping section, that is, the vibration-damping section extends from the beginning end to the end end of the vibration-damping wall to extend the vibration-damping section as much as possible, so as to achieve better vibration reduction and noise reduction effect. The first vibration-damping section 6051 and the second vibration-damping section 6052 (or the vibration-damping wall 604) have a cut-off thickness at their respective ends, which can be determined according to the reflection coefficient and is preferably not less than 0.1 mm, thereby ensuring effective vibration suppression.

[0115] Preferably, the vibration damping device further includes a first damping member 6061 disposed near the first end 6031 and a second damping member 6062 disposed near the second end 6032, so as to effectively dissipate the energy fluctuations accumulated in the first damping section 6051 and the second damping section 6052, thereby significantly reducing the reflection coefficient caused by the truncation at the end, and achieving good energy absorption and vibration reduction / noise reduction effects. Figures 16 to 18 As shown, both the first damping element 6061 and the second damping element 6062 can be constructed as strips and respectively assembled onto the first wall portion 6041 and the second wall portion 6042, for example, by being respectively adhered to the radially outer surfaces of the first wall portion 6041 and the second wall portion 6042. The first damping element 6061 and the second damping element 6062 can also be constructed as other forms, such as coatings, and can be disposed on two surfaces opposite to each other in their thickness direction in the uniform section or the damping section (in...). Figure 8 At least one of the surfaces shown in the diagram (radial inner surface and radial outer surface).

[0116] like Figure 16 , Figure 17As shown, the assembly portion 602 is annular and arranged above the fixed vortex end plate 21 around the annular wall 24. The assembly portion 602 can extend generally axially and be fixed to the outer peripheral surface of the annular wall 24 and / or the second side surface of the fixed vortex end plate 21. In the absence of a back pressure cavity and thus no annular wall 24, the assembly portion 602 can also be fixed to the outer peripheral surface of the fixed vortex hub portion 26. Alternatively, the assembly portion 602 can be arranged around the outer peripheral wall 23 of the fixed vortex 20 and fixed to the outer peripheral surface of the outer peripheral wall 23. The assembly portion 602 is located at the center of the vibration damping device 600, and each layer of the damping wall portion 604 (including the first wall portion 6041 and the second wall portion 6042 in this embodiment) is constructed as a spiral arm that unfolds in an involute shape. The first wall portion 6041 and the second wall portion 6042 extend from the assembly portion 602 in generally opposite directions (e.g., clockwise and counterclockwise). Although the vibration damping wall 604 in this embodiment includes only two spiral arm-type wall portions, those skilled in the art will understand that the vibration damping wall portion may also include one, three, or more spiral arm-type wall portions. The vibration damping wall portion 604 is arranged to surround the vortex member (fixed vortex 20). The multiple layers of walls of the vibration damping wall portion 504 are spaced apart from each other, thereby forming multiple vibration damping channels. Preferably, the gap between adjacent walls is not less than 0.5 mm to ensure the propagation and dissipation of vibrations. For example, in the sixth embodiment of the present invention, the first wall portion 6041 and the second wall portion 6042 each form two vibration damping channels. Since the multiple layers of walls form multiple vibration damping channels, when the vibrations and noise generated by the movement of the vortex member propagate along the multiple vibration damping channels, they can be absorbed and dissipated more effectively than a single vibration damping channel, thereby improving the vibration damping and noise reduction effect of the vibration damping device.

[0117] Preferably, the thickness of the first damping section 6051 and the second damping section 6052 gradually decreases along the extension direction of the damping wall 604 with different power exponents, so as to reduce the noise of different frequencies generated by the vortex component.

[0118] Similar to the first embodiment according to the invention, each damping segment 6051, 6052 each includes first surfaces that are opposite to each other in the thickness direction of each wall layer (in... Figure 18 The radial outer surface is shown in the diagram, and the second surface is shown in the diagram. Figure 18 The diagram shows the radial outer surface, wherein the profile curve of the first surface of each damping section 6051, 6052 is a power-law curve. However, those skilled in the art will understand that the profile curves of the first surface and / or the second surface of each damping section 6051, 6052 can all be power-law curves. Preferably, the power-law curves corresponding to the damping sections of each wall layer are designed for the required vibration damping frequency, so that the damping device has the ability to dampen multiple vibration frequencies.

[0119] According to the sixth embodiment of the present invention, not only can the effects obtained as in the fourth embodiment of the present invention be obtained, but also, since the vibration damping device is in a coiled shape and each wall portion is constructed in the form of a spiral arm, the extension length of the vibration damping section can be greatly extended under the limitation of external dimensions, and the extension length of the damping member can be extended accordingly, thereby enhancing the vibration damping and noise reduction effect, expanding the vibration damping frequency range, and improving the utilization rate of the internal space of the compressor.

[0120] Preferably, the vibration damping device can be configured to include multiple components. For example, such as... Figure 16 , Figure 17 As shown, four vibration damping devices 600, 600a, 600b, and 600c overlap in the axial direction of the compressor (with or without gaps between them). The shapes and structures of the four vibration damping devices 600, 600a, 600b, and 600c can be completely identical, or they can have only a basic structural similarity but their respective damping sections have different power-law profile curves, thereby further enhancing the vibration damping effect or expanding the frequency range that can be damped. Furthermore, stacking multiple vibration damping devices can further improve the utilization rate of the compressor's internal space. In particular, the assembly parts of the multiple vibration damping devices can be separate and stacked together, or they can be arranged as follows: Figure 17 The structure shown is formed as a single unit, making installation easier.

[0121] Those skilled in the art will understand that although only disc-shaped and coil-shaped vibration damping devices are shown in the fifth and sixth embodiments of the present invention, they may include a design with multiple vibration damping channels. However, those skilled in the art will understand that the design with multiple vibration damping channels is also applicable to cover-shaped vibration damping devices. That is, cover-shaped vibration damping devices may include multiple layers of walls extending in the axial direction, the multiple layers of walls at least partially overlapping in the radial direction.

[0122] Furthermore, although in embodiments of the present invention the vibration damping device is arranged around the scroll component to reduce the vibration and noise generated by the scroll component, those skilled in the art will understand that the vibration damping device can also be arranged around other vibrating components in the compressor, such as motors, to reduce the vibration and noise generated by other vibrating components.

[0123] Although various embodiments of the invention have been described in detail herein, it should be understood that the invention is not limited to the specific embodiments described and shown herein, and other modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the invention. All such modifications and variations fall within the scope of the invention. Moreover, all components described herein can be replaced by other technically equivalent components.

Claims

1. A vibration damping device (100, 200, 300, 400, 500, 600) for a compressor, said compressor comprising a scroll component for compressing a working fluid and a thrust plate and a main bearing housing (40) for supporting said scroll component, characterized in that The vibration damping device includes an assembly part (102, 302, 402, 502, 602) and a vibration damping wall part (104, 204, 304, 404, 504, 604). The vibration damping wall part extends from the assembly part to its end (103, 203, 303, 403, 5031, 5032, 5033, 6031, 6032) in the extending direction of the vibration damping wall part. The vibration damping wall part includes a vibration damping section (105, 405, 5051, 5052, 5053, 6051, 6052) having the end point. The thickness of the vibration damping section gradually decreases exponentially along the extending direction of the vibration damping wall part. The vibration damping wall is arranged around the vortex component, and the mounting part is fixed to the vortex component, the thrust plate, or the main bearing seat (40) to reduce the noise generated by the vortex component.

2. The damping device (100, 200, 300, 400, 500, 600) according to claim 1, wherein The vibration damping device (100, 200, 300, 400) is constructed in a cover shape, and the vibration damping wall (104, 204, 304, 404) is spaced apart from the vortex component.

3. The damping device (100, 200, 300, 400, 500, 600) according to claim 2, wherein The vibration damping wall (104, 204, 304, 404) completely covers the vortex component.

4. The damping device (100, 200, 300, 400, 500, 600) according to claim 2, wherein The vibration damping wall (104, 204, 304, 404) is cylindrical or hemispherical.

5. The damping device (100, 200, 300, 400, 500, 600) according to claim 2, wherein The vibration damping wall (204, 304) includes a thin-walled region (208, 308) and a thick-walled region (210, 310) in the circumferential direction, wherein the wall thickness of the thin-walled region is less than the wall thickness of the thick-walled region.

6. The vibration damping device (100, 200, 300, 400, 500, 600) according to claim 5, wherein, The thin-walled region and the thick-walled region are evenly arranged in the circumferential direction.

7. The vibration damping device (100, 200, 300, 400, 500, 600) according to claim 5, wherein, The thin-walled region is formed by creating grooves on the radially inner or radially outer side of the vibration-damping wall.

8. The vibration damping device (100, 200, 300, 400, 500, 600) according to claim 7, wherein, The cross-sectional structure of the groove forming the thin-walled region, taken along a direction orthogonal to the axial direction, is an arc shape, a rectangle, or a combination of an arc shape and a rectangle.

9. The vibration damping device (100, 200, 300, 400, 500, 600) according to claim 5, wherein, The thin-walled region does not extend to the end of the damping wall in the axial direction.

10. The vibration damping device (100, 200, 300, 400, 500, 600) according to claim 6, wherein, An opening (309) is provided at the thin-walled region (308) extending generally in the axial direction to the end of the damping wall portion. The opening divides the thin-walled region into two independent sub-thin-walled regions (3081, 3082) and separates two thick-walled regions adjacent to the thin-walled region.

11. The vibration damping device (100, 200, 300, 400, 500, 600) according to claim 1, wherein, The vibration damping device (500, 600) is in the shape of a flat disc in which the vibration damping wall extends generally in the radial direction or in the shape of a coil in which the vibration damping wall extends generally in the circumferential direction.

12. The vibration damping device (100, 200, 300, 400, 500, 600) according to claim 1, wherein, The vibration damping wall (504, 604) is constructed as a multi-layer wall, and each layer of the multi-layer wall includes a vibration damping section (5051, 5052, 5053, 6051, 6052) with its own end (5031, 5032, 5033, 6031, 6032) in the extension direction of the vibration damping wall. The multi-layer wall is spaced apart from each other, thereby forming multiple vibration damping channels.

13. The vibration damping device (100, 200, 300, 400, 500, 600) according to claim 12, wherein, The thickness of the damping section in each of the multi-layered walls gradually decreases along the extension direction of the damping wall with different power functions.

14. The vibration damping device (100, 200, 300, 400, 500, 600) according to claim 12, wherein, The gap between adjacent layers of the multi-layer wall is not less than 0.5 mm.

15. The vibration damping device (100, 200, 300, 400, 500, 600) according to any one of claims 1 to 14, wherein, The vortex component includes a fixed vortex (20) and a moving vortex (30). The fixed vortex includes a fixed vortex end plate (21), a vortex blade (22) extending from a first side of the fixed vortex end plate, an outer peripheral wall (23) arranged around the vortex blade, and an annular wall (24) extending from a second side of the fixed vortex end plate opposite to the first side. The assembly parts (102, 302, 502, 602) are fixed to the outer peripheral surface of the annular wall, the second side surface of the fixed vortex end plate, and / or the outer peripheral surface of the outer peripheral wall.

16. The vibration damping device (100, 200, 300, 400, 500, 600) according to any one of claims 1 to 14, wherein, The vortex component includes a fixed vortex (20) and a moving vortex (30). The fixed vortex includes a fixed vortex end plate (21), a vortex blade (22) extending from a first side of the fixed vortex end plate, an outer peripheral wall (23) arranged around the vortex blade, and an annular wall (24) extending from a second side of the fixed vortex end plate opposite to the first side. The outer peripheral wall includes a lug (27) that extends radially outward. The assembly part (402) is fixed to the thrust plate and / or the main bearing housing by passing a fastener (61) through the assembly part, the lug, and inserting it into the mounting hole of the thrust plate and / or the main bearing housing (40).

17. The vibration damping device (100, 200, 300, 400, 500, 600) according to claim 16, wherein, A sleeve (62) is provided on the outer periphery of the fastener. The sleeve passes through the lug and is disposed between the assembly part and the thrust plate or the main bearing seat. The fastener and the sleeve together form an axially flexible mounting mechanism (60) so that the stationary vortex mounted to the thrust portion and / or the main bearing housing via the axially flexible mounting mechanism can move axially relative to the moving vortex.

18. The vibration damping device (100, 200, 300, 400, 500, 600) according to any one of claims 1 to 14, wherein, The assembly part is ring-shaped.

19. A vibration damping device (100, 200, 300, 400, 500, 600) for a compressor, said vibration damping device being fixed to a vibrating component of the compressor. Its features are, The vibration damping device includes an assembly section (102, 302, 402, 502, 602) and a damping wall section (104, 204, 304, 404, 504, 604). The damping wall section extends from the assembly section to its end (103, 203, 303, 403, 5031, 5032, 5033, 6031, 6032). The damping wall section is constructed as a multi-layered wall section. Each layer of the multi-layered wall section includes a damping segment (105, 405, 5051, 5052, 5053, 6051, 6052) with its own end in the extending direction of the damping wall section. The multi-layered wall sections are spaced apart from each other, thereby forming multiple vibration damping channels. In this multi-layer wall section, the thickness of the damping section of each wall layer gradually decreases along the extension direction of the damping wall section with different power functions, in order to reduce noise of different frequencies generated by the vibrating component.

20. The vibration damping device (100, 200, 300, 400, 500, 600) according to claim 19, wherein, The gap between adjacent layers of the multi-layer wall is not less than 0.5 mm.

21. The vibration damping device (100, 200, 300, 400, 500, 600) according to claim 19 or 20, wherein, The vibration damping device (500) is in the shape of a flat plate, the vibration damping wall extends generally in the radial direction, and the multi-layered wall overlaps at least partially in the axial direction.

22. The vibration damping device (100, 200, 300, 400, 500, 600) according to claim 19 or 20, wherein, The vibration damping device (100, 200, 300, 400) is in the shape of a cover, the vibration damping wall extends generally in the axial direction, and the multi-layered wall overlaps at least partially in the radial direction.

23. The vibration damping device (100, 200, 300, 400, 500, 600) according to claim 19 or 20, wherein, The vibration damping device is in the shape of a coil (600), the vibration damping wall extends generally in the circumferential direction, and the multi-layered wall overlaps at least partially in the radial direction.

24. The vibration damping device (100, 200, 300, 400, 500, 600) according to claim 23, wherein, The assembly part (602) is annular and located in the center of the vibration damping device, and each layer of the multi-layer wall part (6041, 6042) is constructed as a spiral arm that unfolds in an involute shape.

25. The vibration damping device (100, 200, 300, 400, 500, 600) according to claim 24, wherein, The vibration damping sections (6051, 6052) extend from the assembly section (602) to the end section (6031, 6032).

26. The vibration damping device (100, 200, 300, 400, 500, 600) according to claim 23, wherein, The vibration damping device is constructed in multiple parts, and the multiple vibration damping devices overlap in the axial direction of the compressor.

27. A vibration damping device (100, 200, 300, 400) for a compressor, said vibration damping device being fixed to a vibrating component of the compressor. Its features are, The vibration damping device includes an assembly part (102, 302, 402) and a vibration damping wall part (104, 204, 304, 404). The vibration damping wall part extends from the assembly part to its end (103, 203, 303, 403). The vibration damping wall part includes a vibration damping section (105, 405) having the end point in its extending direction. The thickness of the vibration damping section gradually decreases exponentially along the extending direction of the vibration damping wall part. The vibration damping device is constructed in the shape of a cover, and the vibration damping wall is arranged to surround the vibrating component and be spaced apart from the vibrating component.

28. The vibration damping device (100, 200, 300, 400) according to claim 27, wherein, The vibration damping wall is cylindrical or hemispherical.

29. The vibration damping device (100, 200, 300, 400) according to claim 27, wherein, The vibrating component is a vortex component.

30. The vibration damping device (100, 200, 300, 400) according to claim 29, wherein, The vortex component includes a fixed vortex (20) and a moving vortex (30). The fixed vortex includes a fixed vortex end plate (21), a vortex blade (22) extending from a first side of the fixed vortex end plate, and an outer peripheral wall (23) arranged around the vortex blade. There is a gap between the radial inner side of the damping wall and the outer peripheral surface of the outer peripheral wall. The damping wall completely covers the outer peripheral wall of the fixed vortex.

31. The vibration damping device (100, 200, 300, 400) according to claim 27, wherein, The vibration damping wall (204, 304) includes a thin-walled region (208, 308) and a thick-walled region (210, 310) in the circumferential direction, wherein the wall thickness of the thin-walled region is less than the wall thickness of the thick-walled region.

32. The vibration damping device (100, 200, 300, 400) according to claim 31, wherein, The thin-walled region and the thick-walled region are evenly arranged in the circumferential direction.

33. The vibration damping device (100, 200, 300, 400) according to claim 31, wherein, The thin-walled region is formed by creating grooves on the radially inner and / or radially outer sides of the vibration-damping wall.

34. The vibration damping device (100, 200, 300, 400) according to claim 33, wherein, The cross-sectional structure of the groove forming the thin-walled region, taken along a direction orthogonal to the axial direction, is an arc shape, a rectangle, or a combination of an arc shape and a rectangle.

35. The vibration damping device (100, 200, 300, 400) according to claim 31, wherein, The thin-walled region does not extend to the end of the damping wall in the axial direction.

36. The vibration damping device (100, 200, 300, 400) according to claim 32, wherein, An opening (309) extending from the assembly portion to the end of the vibration damping wall portion is provided in the thin-walled region (308), the opening dividing the thin-walled region into two independent sub-thin-walled regions (3081, 3082) and separating two thick-walled regions adjacent to the thin-walled region.

37. The vibration damping device (100, 200, 300, 400) according to any one of claims 1, 19, and 27, wherein, The vibration damping section includes a first surface and a second surface that are opposite to each other in the thickness direction of the vibration damping wall, wherein the profile curves of the first surface and / or the second surface are power curves.

38. The vibration damping device according to claim 37, wherein, The first surface is symmetrical to the second surface.

39. The vibration damping device according to any one of claims 1, 19, and 27, wherein, The vibration damping wall is made of damping metal or non-metallic materials.

40. The vibration damping device according to any one of claims 1, 19, and 27, wherein, The vibration damping device includes a damping element disposed at or near the end.

41. The vibration damping device according to claim 40, wherein, The damping element is made of a material with damping properties higher than those of the material used in the vibration damping wall.

42. The vibration damping device according to claim 41, wherein, The damping element is constructed as a block and assembled on the vibration damping wall portion, or the damping element is constructed as a layer and coated onto the vibration damping wall portion.

43. The vibration damping device according to any one of claims 1, 19, and 27, wherein, The vibration damping wall has a cut-off thickness at the end, and the cut-off thickness is not less than 0.1 mm.

44. A scroll compressor comprising a vibration damping device according to any one of claims 1 to 43.

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