Liquid accumulator connecting structure, compressor and air conditioner

Abstract

The invention provides a liquid storage device connecting structure, a compressor and an air conditioner, the liquid storage device connecting structure comprises a first connecting support used for being fixedly connected with a shell of the compressor and a second connecting support used for being fixedly connected with a shell of a liquid storage device, and the first connecting support and the second connecting support are detachably connected; the first connecting support and the second connecting support are isolated through a vibration reduction damping piece. According to the liquid accumulator connecting structure, shear deformation of the damping material can be fully utilized, the first-order modal damping ratio of the liquid accumulator connecting structure is increased, dissipation of vibration energy is increased, then tangential vibration of a liquid accumulator is remarkably reduced, and the damping and noise reduction effect in the running process of a compressor is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioning, and in particular relates to a liquid storage connection structure, a compressor, and an air conditioner. Background Art

[0002] The accumulator is an important component of the rotary compressor and is also one of the main noise 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 generating noise. When the system pipeline design is unreasonable, this resonance will also cause the system pipeline to resonate, causing a significant increase in noise.

[0003] In the prior art, the connection rigidity between the liquid reservoir and the housing is often enhanced to increase the fixed frequency of the liquid reservoir, thereby reducing the noise generation.

[0004] Patent CN 119802912 A welds the liquid reservoir directly to the compressor body via a rigid bracket, which can improve the connection stiffness of the liquid reservoir. However, this reduces the connection damping, fails to attenuate the vibration transmitted from the compressor body, and easily generates high-frequency noise problems. Patent CN 118088448 A makes the rigid bracket flexible to a certain extent, reducing the vibration transmission of the body, but does not fully utilize the shear deformation of the rubber pad to dissipate vibration energy. Summary of the Invention

[0005] Therefore, the present invention provides a liquid reservoir connection structure, a compressor, and an air conditioner, which can overcome the technical problem in the related art that the design of the compressor liquid reservoir connection structure is not optimized enough, resulting in poor vibration and noise reduction effects of the compressor and the system.

[0006] In order to solve the above problems, the present invention provides a liquid reservoir connection structure, including a first connecting bracket for fixedly connecting to the outer casing of the compressor and a second connecting bracket for fixedly connecting to the outer casing of the liquid reservoir, the first connecting bracket and the second connecting bracket are detachably connected, and the first connecting bracket and the second connecting bracket are isolated by a vibration-damping damping member.

[0007] In some embodiments, the first connecting bracket includes a first fixed connecting member welded to the outer shell of the compressor and a first docking plate detachably assembled on the first fixed connecting member, the second connecting bracket includes two second fixed connecting members welded to the outer shell of the liquid reservoir and a second docking plate for docking with the first docking plate, and the vibration damping member is clamped between the first docking plate and the second docking plate.

[0008] In some embodiments, the first fixed connecting member includes an intermediate plate and a first welding plate and a second welding plate located at both ends of the length of the intermediate plate. The first welding plate, the intermediate plate and the second welding plate form an isosceles trapezoidal structure. A first assembly hole is formed on the connection area between the first welding plate and the intermediate plate, and a second assembly hole is formed on the connection area between the second welding plate and the intermediate plate. The two ends of the first docking plate pass through the first assembly hole and the second assembly hole respectively. The two ends of the second docking plate are detachably connected to the two ends of the first docking plate, and the second docking plate and the first docking plate are respectively located on both sides of the intermediate plate. The vibration damping member is a rubber plate, and there are two rubber plates. One of the two rubber plates is clamped between the first docking plate and the intermediate plate, and the other is clamped between the second docking plate and the intermediate plate.

[0009] In some embodiments, both ends of the first docking plate, both ends of the second docking plate, and the two second fixing connectors are respectively connected by bolts via bolt assemblies.

[0010] In some embodiments, both ends of the rubber plate limit the bolt assembly.

[0011] In some embodiments, the first connecting bracket includes a first fixed connecting member welded to the outer shell of the compressor and a connecting plate fixedly connected to the first fixed connecting member, the second connecting bracket includes two second fixed connecting members welded to the outer shell of the liquid reservoir and a connecting sleeve fixedly connected between the two second fixed connecting members, the connecting plate passes through the connecting sleeve, and an annular gap is formed between the connecting plate and the connecting sleeve, and the vibration damping member is embedded in the annular gap.

[0012] In some embodiments, the vibration damping component is embedded in the annular gap by injection molding.

[0013] In some embodiments, the first fixed connecting member includes an intermediate plate and a first welding plate and a second welding plate located at both ends of the length of the intermediate plate. The first welding plate, the intermediate plate and the second welding plate form an isosceles trapezoidal structure, and a yield structure is formed in the area corresponding to the position of the intermediate plate and the connecting sleeve.

[0014] The present invention also provides a compressor comprising the above-mentioned liquid accumulator connection structure.

[0015] The present invention also provides an air conditioner comprising the above-mentioned compressor.

[0016] The liquid accumulator connection structure, compressor, and air conditioner provided by the present invention have the following beneficial effects:

[0017] The vibration-damping damping component that is traditionally located between the connecting bracket and the reservoir housing is changed to be located between the first connecting bracket and the second connecting bracket, so that the shear deformation of the vibration-damping material can be fully utilized, the first-order modal damping ratio of the reservoir connection structure is improved, the dissipation of vibration energy is increased, and the tangential vibration of the reservoir is significantly reduced, thereby improving the vibration reduction and noise reduction effect during the operation of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. The drawings described below are merely exemplary. Those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the liquid reservoir connection structure in the prior art;

[0020] Figure 2 yes Figure 1 A top view of

[0021] Figure 3 This is a schematic diagram of the tangential swing of the liquid accumulator during the operation of the compressor in the prior art;

[0022] Figure 4 is a top view of the assembly of the liquid accumulator connection structure, the compressor, and the liquid accumulator in an embodiment of the present invention;

[0023] Figure 5 yes Figure 4 A schematic diagram of the three-dimensional structure of the liquid reservoir connection structure;

[0024] Figure 6 yes Figure 5 An exploded view of the reservoir connection structure;

[0025] Figure 7 is a schematic diagram of the three-dimensional structure of a liquid reservoir connection structure according to another embodiment of the present invention;

[0026] Figure 8 yes Figure 7 An exploded view of the reservoir connection structure;

[0027] Figure 9 It is a curve comparison diagram of the vibration acceleration of the liquid reservoir at different operating frequencies of a compressor with a traditional structure (that is, not adopting the technical solution of the present invention) and a compressor adopting the technical solution of the present invention (that is, the tangential frequency response curve of the liquid reservoir).

[0028] The accompanying drawings are:

[0029] 1. First connecting bracket; 11. First fixed connecting member; 111. Intermediate plate; 1111. First assembly hole; 1112. Second assembly hole; 1113. Yield structure; 112. First welding plate; 113. Second welding plate; 12. First docking plate; 2. Second connecting bracket; 21. Second fixed connecting member; 22. Second docking plate; 31. Connecting plate; 32. Connecting sleeve; 4. Bolt assembly; 5. Vibration damping member; 100. Compressor; 200. Liquid reservoir. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0032] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90° or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0033] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0034] See Figures 1 to 3 The figure shows the connection relationship between the compressor and the liquid accumulator in the prior art, wherein, for details, see Figure 1 As shown, the compressor and the liquid accumulator are connected as a whole through a rigid connecting bracket. In order to reduce the transmission of the vibration of the compressor to the liquid accumulator, a rubber pad (such as Figure 2 As shown in FIG), this structure of the liquid accumulator connection structure can reduce the vibration of the compressor to a certain extent through the connection bracket to the liquid accumulator, thereby reducing the tangential swing of the liquid accumulator during the operation of the compressor to a certain extent (as shown in FIG). Figure 3 As shown), however, since the rubber pad is limited to the space between the connecting bracket and the liquid reservoir housing, the shear deformation of the rubber pad cannot be fully utilized to dissipate the vibration energy, resulting in poor vibration reduction effect of the compressor and system in the prior art.

[0035] The modal damping ratio is a key parameter that describes a structure's energy dissipation capacity in a specific vibration mode. It reflects the decay rate of the structure's vibration energy in that mode, directly impacting the system's dynamic response and stability. It is a key indicator in structural design and vibration control. Therefore, by fully utilizing the shear deformation of shear materials and reducing the damping ratio of the reservoir's first-order tangential mode, vibration and noise reduction can be achieved without increasing structural stiffness. To address this objective, the present invention provides the following technical solutions.

[0036] See also Figures 4 to 9 As shown, according to an embodiment of the present invention, a liquid reservoir connection structure is provided, including a first connecting bracket 1 for fixedly connecting to the outer shell of the compressor 100 and a second connecting bracket 2 for fixedly connecting to the outer shell of the liquid reservoir 200, the first connecting bracket 1 and the second connecting bracket 2 are detachably connected, and the first connecting bracket 1 and the second connecting bracket 2 are isolated via a vibration-damping damping member 5.

[0037] In this technical solution, the vibration-damping damping component 5, which is traditionally located between the connecting bracket and the reservoir housing, is changed to be located between the first connecting bracket 1 and the second connecting bracket 2, so that the shear deformation of the vibration-damping material can be fully utilized, the first-order modal damping ratio of the reservoir connection structure is improved, the dissipation of vibration energy is increased, and the tangential vibration of the reservoir is significantly reduced, thereby improving the vibration reduction and noise reduction effect during the operation of the compressor.

[0038] Specifically, in a single degree of freedom system, |H(ω)| is the amplification factor of the system, which represents the ratio of the amplitude X of the system response to the static displacement of the system under the action of the constant force F (generated by the vibration during the operation of the compressor). n ≈1, that is, the excitation frequency ω is approximately equal to the undamped natural frequency ω of the system n When , a peak value appears in the amplitude-frequency characteristic curve, and the damping ratio ξ is inversely proportional to the peak value. The larger ξ is, the smaller the peak value is. The increase in the first-order damping ratio of the liquid reservoir connection structure in the present invention also reduces the tangential swing amplitude of the liquid reservoir, thereby achieving the design purpose of vibration reduction and noise reduction.

[0039] The first connecting bracket 1 and the second connecting bracket 2 are specifically brackets with a certain degree of elasticity. In some embodiments, they can be made of cast iron or carbon steel or a composite material of the above two.

[0040] The aforementioned vibration damping member 5 can be made of nitrile rubber, or other high-damping rubber materials of other thicknesses such as polysulfide rubber, polytetrafluoroethylene, etc.

[0041] Example 1:

[0042] See also Figures 4 to 6 As shown, in some embodiments, the first connecting bracket 1 includes a first fixed connector 11 welded to the outer shell of the compressor 100 and a first docking plate 12 detachably assembled on the first fixed connector 11, the second connecting bracket 2 includes two second fixed connectors 21 welded to the outer shell of the liquid reservoir 200 and a second docking plate 22 for docking with the first docking plate 12, the vibration damping member 5 is clamped between the first docking plate 12 and the second docking plate 22, and in a feasible embodiment, the two second fixed connectors 21 can be integrally formed (including welding) at both ends of the second docking plate 22.

[0043] In this technical solution, the aforementioned first fixed connector 11 and the second fixed connector 21 are welded to the outer shell of the compressor 100 and the outer shell of the liquid reservoir 200 respectively, which can ensure a reliable and stable connection between the liquid reservoir connection structure and the compressor 100 and the liquid reservoir 200. At the same time, the vibration damping member 5 is clamped between the first docking plate 12 and the second docking plate 22, so that the rigid first docking plate 12 and the second docking plate 22 connected to each other are connected via a flexible member, which can fully utilize the shear deformation of the vibration damping member 5 to dissipate vibration energy.

[0044] See Figure 5As shown, in some embodiments, the first fixed connector 11 includes an intermediate plate 111 and a first welding plate 112 and a second welding plate 113 at both ends of the length of the intermediate plate 111. The first welding plate 112, the intermediate plate 111 and the second welding plate 113 form an isosceles trapezoidal structure. A first assembly hole 1111 is formed on the connection area between the first welding plate 112 and the intermediate plate 111, and a second assembly hole 1112 is formed on the connection area between the second welding plate 113 and the intermediate plate 111. The two ends of the first docking plate 12 pass through At the first assembly hole 1111 and the second assembly hole 1112, the two ends of the second docking plate 22 are detachably connected to the two ends of the first docking plate 12, and the second docking plate 22 and the first docking plate 12 are respectively located on both sides of the intermediate plate 111. The vibration damping member 5 is a rubber plate (in a specific embodiment, a 1.5 mm thick nitrile rubber pad). There are two rubber plates, one of which is clamped between the first docking plate 12 and the intermediate plate 111, and the other is clamped between the second docking plate 22 and the intermediate plate 111.

[0045] In this technical solution, the vibration damping element 5 is implemented using two rubber plates, and the two rubber plates are clamped between the first docking plate 12 and the middle plate 111, and between the middle plate 111 and the second docking plate 22, respectively. This can fully isolate the interconnected rigid components and allow the rubber plates to have greater shear deformation. It is worth emphasizing that because the first docking plate 12 passes through the assembly holes at both ends of the middle plate 111 and docks with the second docking plate 22 on the other side of the middle plate 111, and the two rubber plates are placed between them, the middle plate 111 can be completely surrounded and wrapped between the two rubber plates, thereby objectively eliminating the rigid contact between the first docking plate 12, the first fixed connector 11, and the second docking plate 22. Figure 5 As shown, the two layers of rubber sheets are bonded together at both ends of the middle plate 111, thereby providing flexible support for both ends of the middle plate 111 (support in the tangential swing direction of the liquid reservoir 200). Furthermore, the first docking plate 12 is bent at both ends of the middle plate 111, and this bend supports the side of the two bonded rubber sheets away from the middle plate 111. In other words, objectively, the two layers of rubber sheets form a surrounding arrangement around the middle plate 111.

[0046] In some embodiments, both ends of the first docking plate 12, both ends of the second docking plate 22, and the two second fixed connectors 21 are respectively connected by bolts via a bolt assembly 4, that is, the various components in this technical solution are assembled into one by assembling, which can facilitate the assembly of the liquid reservoir connection structure with the compressor 100 and the liquid reservoir 200, thereby reducing the difficulty of assembly.

[0047] In some embodiments, both ends of the rubber sheet are limited by the bolt assembly 4, that is, corresponding through holes are provided at both ends of the rubber sheet, and the bolt assembly 4 passes through the through holes to ensure that the positions of the two layers of rubber sheets are reliable and stable.

[0048] According to calculation, the liquid storage connection structure of the present invention is Figure 2 Compared with the accumulator connection structure shown in FIG, the compressor of the present invention has a modal damping ratio that is three times higher than that of the conventional structure because the vibration damping member 5 is arranged between the first connecting bracket 1 and the second connecting bracket 2. Figure 9 As shown, the vibration acceleration of the liquid reservoir is 400mm / s 2 Reduced to 150mm / s of the present invention 2 Below this, the reservoir amplitude is significantly reduced.

[0049] Example 2:

[0050] For specific combination, see Figure 7 and Figure 8 As shown, in some embodiments, the first connecting bracket 1 includes a first fixed connector 11 welded to the outer shell of the compressor 100 and a connecting plate 31 fixedly connected to the first fixed connector 11, the second connecting bracket 2 includes two second fixed connectors 21 welded to the outer shell of the liquid reservoir 200 and a connecting sleeve 32 fixedly connected (specifically preferably by welding) between the two second fixed connectors 21, the connecting plate 31 passes through the connecting sleeve 32, and an annular gap is formed between the connecting plate 31 and the connecting sleeve 32, the vibration damping member 5 is embedded in the annular gap, in a specific embodiment shown in the figure, the central through hole of the aforementioned connecting sleeve 32 is rectangular, which roughly matches the cross-section of the connecting plate 31, so that the aforementioned annular gap is specifically a rectangular annular gap.

[0051] In this technical solution, by arranging the vibration-damping damping member 5 in the annular gap, an objective surrounding arrangement of the plug-in fitting area of the connecting sleeve 32 and the connecting plate 31 is formed, and the rigid connecting plate 31 and the connecting sleeve 32 are isolated by the vibration-damping damping member 5, thereby fully utilizing the shear deformation of the shear material, reducing the damping ratio of the tangential first-order mode of the liquid reservoir, and increasing the dissipation of vibration energy, thereby achieving the effect of vibration reduction and noise reduction without increasing the structural stiffness.

[0052] In some embodiments, the vibration damping member 5 is embedded in the annular gap by injection molding. Forming the vibration damping member 5 by injection molding can ensure that the vibration damping member 5 can be more reliably located between the connecting sleeve 32 and the connecting plate 31 .

[0053] In some embodiments, the first fixed connector 11 includes an intermediate plate 111 and a first welding plate 112 and a second welding plate 113 located at both ends of the length of the intermediate plate 111. The first welding plate 112, the intermediate plate 111 and the second welding plate 113 form an isosceles trapezoidal structure. A yield structure 1113 is formed at the area corresponding to the position of the intermediate plate 111 and the connecting sleeve 32. The yield structure 1113 can be a yield hole or a yield groove. Through the setting of the yield structure 1113, part of the structure of the connecting sleeve 32 is located in the yield structure 1113, thereby making the structure of the liquid reservoir connecting bracket more compact and reasonable.

[0054] The welding mentioned above can be done by electric welding or double-side welding.

[0055] According to an embodiment of the present invention, a compressor is further provided, comprising the above-mentioned liquid accumulator connection structure.

[0056] According to an embodiment of the present invention, there is also provided an air conditioner comprising the above-mentioned compressor.

[0057] It is easy for those skilled in the art to understand that, under the premise of no conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and variations without departing from the technical principles of the present invention, and such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. A liquid reservoir connection structure, characterized in that: The invention comprises a first connecting bracket (1) for fixedly connecting to the housing of a compressor (100) and a second connecting bracket (2) for fixedly connecting to the housing of a liquid accumulator (200), wherein the first connecting bracket (1) and the second connecting bracket (2) are detachably connected, and the first connecting bracket (1) and the second connecting bracket (2) are isolated from each other via a vibration-damping member (5).

2. The liquid reservoir connection structure according to claim 1, characterized in that: The first connecting bracket (1) includes a first fixed connecting member (11) welded to the outer shell of the compressor (100) and a first docking plate (12) detachably assembled on the first fixed connecting member (11); the second connecting bracket (2) includes two second fixed connecting members (21) welded to the outer shell of the liquid reservoir (200) and a second docking plate (22) for docking with the first docking plate (12); the vibration damping member (5) is clamped between the first docking plate (12) and the second docking plate (22).

3. The liquid reservoir connection structure according to claim 2, characterized in that: The first fixed connection member (11) includes an intermediate plate (111) and a first welding plate (112) and a second welding plate (113) located at both ends of the length of the intermediate plate (111). The first welding plate (112), the intermediate plate (111) and the second welding plate (113) form an isosceles trapezoidal structure. A first assembly hole (1111) is formed on the connection area between the first welding plate (112) and the intermediate plate (111), and a second assembly hole (1112) is formed on the connection area between the second welding plate (113) and the intermediate plate (111). The first docking plate ( The two ends of the second docking plate (22) pass through the first assembly hole (1111) and the second assembly hole (1112) respectively, the two ends of the second docking plate (22) are detachably connected to the two ends of the first docking plate (12), and the second docking plate (22) and the first docking plate (12) are respectively located on both sides of the intermediate plate (111), the vibration damping member (5) is a rubber plate, and there are two rubber plates, one of the two rubber plates is clamped between the first docking plate (12) and the intermediate plate (111), and the other is clamped between the second docking plate (22) and the intermediate plate (111).

4. The liquid reservoir connection structure according to claim 3, characterized in that: The two ends of the first docking plate (12), the two ends of the second docking plate (22), and the two second fixing connectors (21) are respectively connected by bolts via a bolt assembly (4).

5. The liquid reservoir connection structure according to claim 4, characterized in that: Both ends of the rubber plate are used to limit the bolt assembly (4).

6. The liquid reservoir connection structure according to claim 1, characterized in that: The first connecting bracket (1) includes a first fixed connecting member (11) welded to the outer shell of the compressor (100) and a connecting plate (31) fixedly connected to the first fixed connecting member (11); the second connecting bracket (2) includes two second fixed connecting members (21) welded to the outer shell of the liquid reservoir (200) and a connecting sleeve (32) fixedly connected between the two second fixed connecting members (21); the connecting plate (31) passes through the connecting sleeve (32), and an annular gap is formed between the connecting plate (31) and the connecting sleeve (32); the vibration damping member (5) is embedded in the annular gap.

7. The liquid reservoir connection structure according to claim 6, characterized in that: The vibration damping component (5) is embedded in the annular gap in an injection molding manner.

8. The liquid reservoir connection structure according to claim 6, characterized in that: The first fixed connection member (11) includes an intermediate plate (111) and a first welding plate (112) and a second welding plate (113) located at both ends of the length of the intermediate plate (111); the first welding plate (112), the intermediate plate (111) and the second welding plate (113) form an isosceles trapezoidal structure; a yield structure (1113) is formed in an area corresponding to the position of the intermediate plate (111) and the connecting sleeve (32).

9. A compressor, characterized in that: The invention comprises the liquid reservoir connection structure according to any one of claims 1 to 8.

10. An air conditioner, characterized in that: Including the compressor according to claim 9.

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