Liquid accumulator support of compressor and compressor

Abstract

The invention belongs to the technical field of compressors, and particularly relates to a liquid storage device support of a compressor and the compressor, and the liquid storage device support comprises a first connecting part and a second connecting part, the second connecting part is used for connecting the liquid storage device support and the liquid storage device shell; the transition connecting part is used for connecting the first connecting part and the second connecting part; the first connecting part and / or the transition connecting part are / is further connected with an extension structure, and the extension structure extends in the direction of the liquid storage device shell. Compared with the prior art, the phenomenon that in the prior art, only vibration transmission and noise volume can be weakened, but resonance cannot be avoided from the source is avoided, the tangential first-order modal frequency of the liquid storage device is improved, and therefore resonance of a low-frequency band is avoided, and vibration and noise are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of compressors, and in particular relates to a liquid storage support of a compressor and a compressor. Background Art

[0002] The accumulator is an important component of the rotary compressor and is also one of the main sound sources. In particular, the tangential first-order mode of the accumulator in the low-frequency band is often consistent with the operating frequency or harmonic frequency of the compressor, causing resonance and noise. When the system management design is unreasonable, this resonance will also cause resonance in the system pipeline, which will greatly increase the noise.

[0003] In the existing technology, although the noise radiation level is reduced by optimizing the pipeline design, adding counterweights and damping rubber, the effect is not ideal and a certain degree of resonance will still be generated. The best noise reduction method, from a theoretical analysis, is to increase the tangential first-order modal frequency of the reservoir as much as possible to avoid resonance in the low-frequency band.

[0004] For example, CN218972947U discloses a liquid reservoir bracket structure and a compressor, wherein the liquid reservoir bracket structure includes an L-shaped bracket and a clamp assembly; the short side of the L-shaped bracket is fixedly connected to the top of the compressor housing, the long side of the L-shaped bracket extends from top to bottom, and is connected and fixed to the clamp assembly, the long side of the L-shaped bracket is parallel to the axial direction of the compressor housing, and is spaced apart from the compressor housing; the clamp assembly surrounds the outer wall of the liquid reservoir to hold and fix the liquid reservoir. The short side of the L-shaped bracket is fixed to the top of the compressor housing, and the long side is not in direct contact with the compressor housing to block the vibration transmission in the radial direction of the motor; however, this solution only aims to weaken the radial vibration transmission, and fails to consider the perspective of increasing the tangential first-order modal frequency of the tangential liquid reservoir, which is only a temporary solution and does not address the root cause.

[0005] For example, CN116538096A discloses a compressor accumulator fixing device and a compressor having the same, which includes: a bracket body; a first arm extending from the bracket body and combined with the accumulator; and a second arm extending from the bracket body and combined with the compressor housing, and a concave gap is provided on the side of the bracket body facing the compressor to reduce the vibration generated and transmitted from the compressor. It forms a certain gap inside the bracket to offset and dissipate the vibration to achieve the effect of vibration reduction and noise reduction, which is a temporary solution but not a fundamental solution.

[0006] Therefore, it is necessary to propose a reservoir bracket that can change the generation of vibration and noise from the source, that is, through the structural design of the reservoir bracket, the tangential first-order modal frequency of the reservoir can be increased as much as possible, thereby avoiding resonance in the low-frequency band. Summary of the invention

[0007] The purpose of the present invention is to provide a compressor liquid reservoir bracket and a compressor in order to solve at least one of the above problems, so as to solve the phenomenon that the prior art can only weaken the transmission of vibration and the volume of noise but cannot avoid the occurrence of resonance from the source. The present solution achieves an increase in the tangential first-order modal frequency of the liquid reservoir, thereby avoiding resonance in the low-frequency band to avoid the occurrence of vibration and noise.

[0008] The purpose of the present invention is achieved through the following technical solutions:

[0009] The first aspect of the present invention discloses a liquid reservoir support for a compressor, comprising:

[0010] A first connecting portion, used to connect the liquid reservoir bracket and the compressor housing;

[0011] A second connecting portion, used to connect the liquid reservoir bracket and the liquid reservoir housing;

[0012] A transition connection portion, used to connect the first connection portion and the second connection portion;

[0013] The first connecting portion and / or the transition connecting portion are also connected to an epitaxial structure, and the epitaxial structure extends toward the direction of the liquid reservoir housing.

[0014] Preferably, the first connecting portion is an arc surface, and the first connecting portion is welded to the compressor housing via a plurality of welding points provided on the arc surface.

[0015] Preferably, there are at least three welding spots, and the relationship between the welding spots satisfies: LB≥0.5, wherein L is the distance between adjacent welding spots, and B is the width of the first connecting portion.

[0016] Preferably, there is a gap between the epitaxial structure and the first connecting portion and the liquid reservoir housing.

[0017] Preferably, the epitaxial structure is connected to at least one side of the first connecting portion.

[0018] Preferably, the epitaxial structure is connected to at least one side of the transition connection portion.

[0019] Preferably, the epitaxial structure and the first connecting portion and / or the transition connecting portion are an integrated structure.

[0020] Preferably, the epitaxial structure is fixed to the first connecting portion and / or the transition connecting portion by welding.

[0021] Preferably, the corner of the extension structure is a right angle or an obtuse angle, so that there is a small gap space between the two, thereby avoiding installation interference caused by wall thickness problems when assembling the liquid reservoir bracket and the liquid reservoir subject.

[0022] Preferably, the transition connection portion is arranged at an angle so that the central axis of the second connection portion is higher than the central axis of the first connection portion.

[0023] Preferably, the central axis of the second connecting portion is higher than the central axis of the first connecting portion by at least 5 mm.

[0024] Preferably, the second connection portion is connected to both sides of the first connection portion through transition connection portions, and the central axes of the second connection portions on both sides are located in the same horizontal plane.

[0025] Preferably, a reinforcing rib is provided at the connection between the first connecting portion and the transition connecting portion.

[0026] Further preferably, the reinforcing rib is a convex rib structure or a boss structure.

[0027] A second aspect of the present invention discloses a compressor, comprising a compressor body, a liquid reservoir body and a liquid reservoir bracket as described above;

[0028] The first connection portion of the liquid reservoir bracket is connected to the compressor housing of the compressor body, and the second connection portion of the liquid reservoir bracket is connected to the upper portion of the liquid reservoir housing of the liquid reservoir body through a clamp to limit the swing of the upper portion of the liquid reservoir.

[0029] The working principle of the present invention is:

[0030] This solution sets the central axis of the second connection part higher than the first connection part, so that the clamp used to fix the liquid reservoir shell is further moved up on the liquid reservoir, strengthening the constraint on the upper part of the liquid reservoir to improve the tangential first-order mode of the liquid reservoir; further, by adding an extension structure located at the first connection part and reinforcing ribs at the transition connection part, and coordinating the spacing control of the welding points, the connection rigidity of the liquid reservoir bracket is effectively enhanced, thereby further improving the tangential first-order mode of the liquid reservoir. Compared with the prior art, the present invention has the following beneficial effects:

[0031] The compressor of the present invention can improve the tangential first-order mode of the liquid reservoir, which is beneficial to avoiding the resonance of the liquid reservoir and the system pipeline, reducing the low-frequency noise radiation, and reducing the requirements for improved pipeline design for systems with complex pipelines and compact space.

[0032] By adopting the liquid reservoir bracket of this solution, the first-order tangential mode of the liquid reservoir can be increased to 349Hz (simulation) / 280Hz (actual measurement), which is more than 20% higher than the first-order tangential mode of the liquid reservoir in the conventional existing solution (257Hz (simulation) / 220Hz (actual measurement)), and the effect is obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1This is a front view structural schematic diagram of the liquid reservoir bracket;

[0034] Figure 2 This is a schematic diagram of the axial structure of the liquid reservoir support;

[0035] Figure 3 Schematic diagram of the top view of the structure of the liquid reservoir bracket;

[0036] Figure 4 It is a front view structural schematic diagram of a liquid reservoir bracket of an existing solution;

[0037] Figure 5 It is a schematic diagram of the top view of the structure of the liquid reservoir bracket of the existing solution;

[0038] Figure 6 The following are the actual photos of the existing solution and the present liquid reservoir bracket (the two on the left are the existing solution, and the two on the right are the present solution);

[0039] Figure 7 The modal frequency response curves of the present liquid reservoir bracket and the liquid reservoir bracket of the existing solution;

[0040] Figure 8 This is a front view structural schematic diagram of the liquid reservoir bracket being assembled on the compressor and the liquid reservoir;

[0041] Fig. 9 This is a cross-sectional structural schematic diagram of the liquid reservoir bracket being assembled on the compressor and the liquid reservoir;

[0042] In the figure: 1-first connection part; 2-second connection part; 3-transition connection part; 4-epitaxial structure; 5-welding point; 100-liquid reservoir bracket; 200-compressor housing; 300-liquid reservoir housing. DETAILED DESCRIPTION

[0043] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] Example 1

[0045] A liquid storage support 100 for a compressor, such as Figure 1-3 As shown, including:

[0046] A first connecting portion 1, used to connect the liquid reservoir support 100 and the compressor housing 200;

[0047] The second connecting portion 2 is used to connect the liquid reservoir support 100 and the liquid reservoir housing 300;

[0048] A transition connection portion 3, used to connect the first connection portion 1 and the second connection portion 2;

[0049] The first connection portion 1 and / or the transition connection portion 3 are also connected to an epitaxial structure 4 , and the epitaxial structure 4 extends toward the direction of the liquid reservoir housing 300 .

[0050] A compressor comprises a compressor body, a liquid reservoir body and the above liquid reservoir support 100;

[0051] The first connection portion 1 of the liquid reservoir bracket 100 is connected to the compressor housing 200 of the compressor body, and the second connection portion 2 of the liquid reservoir bracket 100 is connected to the liquid reservoir housing 300 of the liquid reservoir body through a clamp.

[0052] More specifically, in this embodiment:

[0053] The liquid reservoir support 100 includes a first connection portion 1, a second connection portion 2, and a transition connection portion 3 connecting the first connection portion 1 and the second connection portion 2. The transition connection portion 3 is arranged at an angle, so that the central axes of the first connection portion 1 and the second connection portion 2 are located in different horizontal planes (such as Figure 1 As shown, in a front view, the first connection part 1 and the second connection part 2 have a certain displacement in the longitudinal position, and the central axis of the second connection part 2 is higher than the first connection part 1).

[0054] The first connecting part 1, such as Figure 1-3 As shown, its surface is designed as an arc surface, and welding points 5 for welding and fixing with the compressor housing 200 are arranged at intervals on the arc surface. The welding points 5 are hemispherical protrusion structures, and usually at least 3 of them can be arranged. In this embodiment, as shown in FIG. Figure 1-3 There are 4 welding points 5, each of which is located at the four corners of a rectangle, and the distribution of the welding points 5 satisfies LB≥0.5, where L is the distance between adjacent welding points 5, and B is the width of the first connecting portion 1. After the first connecting portion 1 is fixedly connected to the compressor housing 200, a certain gap (a non-enclosed chamber that passes through from top to bottom) can be formed between the first connecting portion 1 and the accumulator housing 300 to avoid installation interference between the two.

[0055] The second connecting portion 2, such as Figure 1-3As shown, it is provided with two sections, which are connected to both sides of the first connection part 1 through the transition connection part 3. The second connection part 2 extends from the rear of the first connection part 1 toward the first connection part 1, one side of which is designed as a two-fold bending structure (with a hole on the bending surface), and the end slightly protrudes from the plane where the first connection part 1 is located, and the other side is a one-fold bending structure, and the end is a "concave"-shaped structure, which does not protrude from the plane where the first connection part 1 is located. After the second connection part 2 is assembled with the clamp, the clamp forms a fixed limit with the liquid reservoir body. The central axis of the second connection part 2 is set to be about 5mm higher than the central axis of the first connection part 1, and then the clamp can be further limited to the upper part of the liquid reservoir on the basis of keeping the welding position of the first connection part 1 and the compressor body basically unchanged, thereby strengthening the constraint of the liquid reservoir by the liquid reservoir bracket 100, which can effectively improve the tangential first-order modulus of the liquid reservoir; when the liquid reservoir bracket 100 has been assembled on the top of the compressor or close to the top, the structure can effectively increase the constraint on the liquid reservoir.

[0056] Transition connection part 3, such as Figure 1-3 As shown, they are respectively connected to both sides of the first connection part 1 and between the first connection part 1 and the second connection part 2, and the connection is continuous and smoothly transitioned. A reinforcing rib, such as a convex rib structure or a boss structure, can also be provided at the connection position between the transition connection part 3 and the first connection part 1 to strengthen the structural strength of the connection position.

[0057] Further Figure 3 As shown in , the reservoir bracket 100 is provided with an epitaxial structure 4 on both upper and lower sides of the first connection part 1 and on both upper and lower sides of the transition connection part 3 (the part close to the first connection part 1), and the epitaxial structure 4 is extended toward the rear (towards one side of the reservoir housing 300), and a certain gap is maintained between the reservoir housing 300 to avoid installation conflicts. In some other embodiments, the epitaxial structure 4 can be provided only on the side of the first connection part 1, or only on one side of the first connection part 1 / transition connection part 3. The epitaxial structure 4 can be integrally formed with the first connection part 1 and the transition connection part 3, or can be fixed by welding. The epitaxial structure 4 can be connected to the first connection part 1 and / or the transition connection part 3 in the form of a right angle or an obtuse angle, and the side of the epitaxial structure 4 can be a straight edge or an arc edge, which is also provided to avoid installation conflicts.

[0058] Performance comparison:

[0059] Figure 4 , 5 The figure shows a liquid reservoir bracket 100 adopted in the current scheme, wherein the central axes of the first connecting portion 1 and the second connecting portion 2 are located in the same horizontal plane, four mutually close welding points are arranged on the first connecting portion 1, and no epitaxial structure 4 is designed. Figure 6The following are photos of the liquid storage bracket 100 of the present solution (two on the right) and the existing solution (two on the left). It can be seen that the two have great differences in structure, including: the present solution adds an epitaxial structure 4, the second connecting portion 2 moves upward, and the spacing between the welding points 5 is increased.

[0060] The two (the two have the same size, only the structure changes) are tested by simulation (modal analysis test) and experimental test (installed on the compressor and the receiver, such as Figure 8 , 9 , hammer test), the results are shown in Table 1 and Figure 7 shown.

[0061] Table 1 Comparison of the tangential first-order modes of the liquid reservoir bracket 100 of the existing solution and the present solution

[0062] Existing solutions This program simulation 257Hz 349Hz Measured 220Hz 280Hz

[0063] The results show that the tangential first-order mode of the liquid reservoir bracket 100 of the present solution has an improvement of no less than 20%, which can effectively reduce or even avoid the resonance in the low-frequency band, achieving the effect of reducing vibration and noise from the source.

[0064] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A liquid storage support for a compressor, characterized in that: include: A first connecting portion (1) used to connect the liquid reservoir support (100) and the compressor housing (200); A second connecting portion (2) used to connect the liquid reservoir support (100) and the liquid reservoir housing (300); A transition connection portion (3), used to connect the first connection portion (1) and the second connection portion (2); The first connecting portion (1) and / or the transition connecting portion (3) are also connected to an epitaxial structure (4), and the epitaxial structure (4) extends in the direction of the liquid reservoir housing (300).

2. A compressor liquid reservoir support according to claim 1, characterized in that: The first connection portion (1) is an arc surface, and the first connection portion (1) is welded to the compressor housing (200) via a plurality of welding points (5) provided on the arc surface.

3. A compressor liquid reservoir support according to claim 2, characterized in that: At least three welding points (5) are provided, and the relationship between the welding points (5) satisfies: L / B≥0.5, wherein L is the distance between adjacent welding points (5), and B is the width of the first connecting portion (1).

4. The liquid reservoir support of a compressor according to claim 1, characterized in that: There is a gap between the epitaxial structure (4), the first connecting portion (1) and the liquid reservoir housing (300).

5. The liquid reservoir support of a compressor according to claim 4, characterized in that: The epitaxial structure (4) is connected to at least one side edge of the first connecting portion (1) and / or the transition connecting portion (3).

6. The liquid reservoir support of a compressor according to claim 1, characterized in that: The transition connection part (3) is arranged at an angle so that the central axis of the second connection part (2) is higher than the central axis of the first connection part (1).

7. A compressor liquid reservoir support according to claim 6, characterized in that: The central axis of the second connecting portion (2) is at least 5 mm higher than the central axis of the first connecting portion (1).

8. The liquid reservoir support of a compressor according to claim 1, characterized in that: The second connecting portion (2) is respectively connected to the two sides of the first connecting portion (1) through the transition connecting portion (3), and the central axes of the second connecting portions (2) on the two sides are located in the same horizontal plane.

9. The liquid reservoir support of a compressor according to claim 1, characterized in that: A reinforcing rib is provided at the connection between the first connecting portion (1) and the transition connecting portion (3).

10. A compressor, characterized in that: It comprises a compressor body, a liquid reservoir body and a liquid reservoir bracket (100) as claimed in any one of claims 1 to 9; The first connection portion (1) of the liquid reservoir bracket (100) is connected to the compressor housing (200) of the compressor body, and the second connection portion (2) of the liquid reservoir bracket (100) is connected to the upper portion of the liquid reservoir housing (300) of the liquid reservoir body via a clamp.

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