Liquid accumulator connecting structure, compressor, air conditioner

Abstract

The utility model provides a kind of liquid accumulator connecting structure, compressor, air conditioner, wherein liquid accumulator connecting structure, including the first connecting support for being fixedly connected with the shell of compressor and the second connecting support for being fixedly connected with the shell of liquid accumulator, the first connecting support with the second connecting support can be detachably connected, and the first connecting support with the second connecting support is isolated via damping member. The utility model can make full use of the shear deformation of damping material, improve the first modal damping ratio of liquid accumulator connecting structure, increase the dissipation of vibration energy, and then significantly reduce the tangential vibration of liquid accumulator, improve the damping and noise reduction effect in the process of compressor operation.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning technology, specifically relating to a liquid receiver connection structure, a compressor, and an air conditioner. Background Technology

[0002] The receiver is an important component of a rotary compressor and also one of the main sources of noise. In particular, the tangential first-order mode of the receiver in the low-frequency range often coincides with the operating frequency or harmonic frequency of the compressor, causing resonance and generating noise. When the system piping design is unreasonable, this resonance can also cause system piping resonance, resulting in a significant increase in noise.

[0003] In existing technologies, noise generation is often reduced by increasing the rigidity of the connection between the reservoir and the housing, thereby increasing the fixed frequency of the reservoir.

[0004] Patent CN 119802912 A welds the liquid receiver directly to the compressor body via a rigid bracket, which can improve the connection rigidity of the liquid receiver, but it will reduce the connection damping and cannot attenuate the vibration transmitted from the compressor body, which is prone to high-frequency noise problems. Patent CN 118088448 A makes the rigid bracket more flexible, which reduces the vibration transmission of the body, but does not make full use of the shear deformation of the rubber pad to dissipate vibration energy. Utility Model Content

[0005] Therefore, this utility model provides a liquid receiver connection structure, a compressor, and an air conditioner, which can overcome the technical problem in the related art where the compressor liquid receiver connection structure design is not optimized enough, resulting in poor vibration reduction and noise reduction effects of the compressor as a whole and the system.

[0006] To address the aforementioned problems, this utility model provides a liquid reservoir connection structure, including a first connecting bracket for fixed connection with the housing of a compressor and a second connecting bracket for fixed connection with the housing of a 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 from each other by a vibration damping component.

[0007] In some embodiments, the first connecting bracket includes a first fixed connector welded to the housing of the compressor and a first docking plate detachably assembled to the first fixed connector; the second connecting bracket includes two second fixed connectors welded to the housing of the 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 connector 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 in the connection area between the first welding plate and the intermediate plate, and a second assembly hole is formed in the connection area between the second welding plate and the intermediate plate. The two ends of the first mating plate pass through the first assembly hole and the second assembly hole, respectively. The two ends of the second mating plate are detachably connected to the two ends of the first mating plate, and the second mating plate and the first mating plate are located on both sides of the intermediate plate. The vibration damping element is a rubber plate, and there are two rubber plates. One of the two rubber plates is clamped between the first mating plate and the intermediate plate, and the other is clamped between the second mating plate and the intermediate plate.

[0009] In some embodiments, the two ends of the first mating plate, the two ends of the second mating plate, and the two second fixed connecting members are respectively bolted together by a bolt assembly.

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

[0011] In some embodiments, the first connecting bracket includes a first fixed connector welded to the housing of the compressor and a connecting plate fixedly connected to the first fixed connector. The second connecting bracket includes two second fixed connectors welded to the housing of the liquid reservoir and a connecting sleeve fixedly connected between the two second fixed connectors. The connecting plate passes through the connecting sleeve and forms an annular gap between the connecting plate and the connecting sleeve. The vibration damping element is embedded in the annular gap.

[0012] In some embodiments, the vibration damping element is injection molded into the annular gap.

[0013] In some embodiments, the first fixed connector 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 clearance structure is formed in the area where the intermediate plate corresponds to the position of the connecting sleeve.

[0014] This utility model also provides a compressor, including the above-described liquid receiver connection structure.

[0015] This utility model also provides an air conditioner, including the compressor described above.

[0016] The liquid receiver connection structure, compressor, and air conditioner provided by this utility model have the following beneficial effects:

[0017] By changing the vibration damping component, which was originally located between the connecting bracket and the reservoir housing in the traditional technology, to be placed between the first connecting bracket and the second connecting bracket, the shear deformation of the vibration damping material can be fully utilized, thereby improving the first-order modal damping ratio of the reservoir connection structure, increasing the dissipation of vibration energy, and thus significantly reducing the tangential vibration of the reservoir and improving the vibration reduction and noise reduction effect during compressor operation. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

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

[0020] Figure 2 yes Figure 1 Top view;

[0021] Figure 3 This is a schematic diagram of the tangential oscillation of the liquid receiver during the operation of a compressor in the prior art.

[0022] Figure 4 This is a top view of the liquid reservoir connection structure, compressor, and liquid reservoir assembled in this embodiment of the present utility model;

[0023] Figure 5 yes Figure 4 A three-dimensional structural diagram of the liquid storage tank connection structure;

[0024] Figure 6 yes Figure 5 Exploded view of the liquid reservoir connection structure in the diagram;

[0025] Figure 7 This is a three-dimensional structural diagram of the liquid reservoir connection structure in another embodiment of this utility model;

[0026] Figure 8 yes Figure 7 Exploded view of the liquid reservoir connection structure in the diagram;

[0027] Figure 9 The graph shows a comparison of the vibration acceleration curves of the liquid receiver at different operating frequencies for compressors with a traditional structure (i.e., those not using the technical solution of this utility model) and those using the technical solution of this utility model.

[0028] The attached figures are labeled as follows:

[0029] 1. First connecting bracket; 11. First fixed connector; 111. Intermediate plate; 1111. First assembly hole; 1112. Second assembly hole; 1113. Clearance structure; 112. First welding plate; 113. Second welding plate; 12. First mating plate; 2. Second connecting bracket; 21. Second fixed connector; 22. Second mating plate; 31. Connecting plate; 32. Connecting sleeve; 4. Bolt assembly; 5. Vibration damping component; 100. Compressor; 200. Liquid reservoir. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0031] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

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

[0033] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0034] See details Figures 1 to 3 The diagram shown illustrates the connection between the compressor and the receiver in the prior art. For details, please refer to... Figure 1 As shown, the compressor and the receiver are connected as one unit by a rigid connecting bracket. To reduce the transmission of compressor vibration to the receiver, in the prior art, a rubber pad (such as...) is installed between the connecting bracket and the receiver's outer casing in the clamping section. Figure 2 As shown), this receiver connection structure can reduce the transmission of compressor vibration to the receiver via the connecting bracket to a certain extent, thereby reducing the tangential oscillation of the receiver during compressor operation (e.g., Figure 3 As shown in the figure, however, since the rubber pad is confined within the space between the connecting bracket and the reservoir housing, the shear deformation of the rubber pad cannot be fully utilized to dissipate vibration energy, resulting in poor vibration reduction effect of the compressor and system in the prior art.

[0035] Modal damping ratio is an important parameter describing the energy dissipation capacity of a structure under a specific vibration mode. It reflects the decay rate of the vibration energy of the structure under that mode and is directly related to the dynamic response and stability of the system. It is one of the key indicators in structural design and vibration control. Therefore, by making full use of the shear deformation of the shear material to reduce the damping ratio of the first-order tangential mode of the reservoir, the effect of vibration reduction and noise reduction can be achieved without increasing the structural stiffness. Based on the aforementioned objective, this utility model provides the following technical solution.

[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 fixed connection with the housing of a compressor 100 and a second connecting bracket 2 for fixed connection with the housing of a 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 from each other by a vibration damping member 5.

[0037] In this technical solution, the vibration damping component 5, which is located between the connecting bracket and the liquid reservoir shell in the traditional technology, is changed to be located between the first connecting bracket 1 and the second connecting bracket 2. This allows full use of the shear deformation of the vibration damping material, improves the first-order mode damping ratio of the liquid reservoir connection structure, increases the dissipation of vibration energy, and thus significantly reduces the tangential vibration of the liquid reservoir, thereby improving the vibration reduction and noise reduction effect during compressor operation.

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

[0039] The aforementioned first connecting bracket 1 and 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 two.

[0040] The aforementioned vibration damping component 5 can be made of nitrile rubber, or it can be made of other high-damping rubber materials of different 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 connecting member 11 welded to the housing 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 housing 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. In one feasible embodiment, the two second fixed connecting members 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 second fixed connector 21 are welded together with the outer shell of the compressor 100 and the outer shell of the liquid receiver 200, respectively, which can ensure a reliable and stable connection between the liquid receiver connection structure and the compressor 100 and the liquid receiver 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 are connected by a flexible member, which can make full use of the shear deformation of the vibration damping member 5 to dissipate vibration energy.

[0044] See details Figure 5As shown, in some embodiments, the first fixing 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 first assembly hole 1111 is formed in the connection area between the first welding plate 112 and the intermediate plate 111, and a second assembly hole 1112 is formed in the connection area between the second welding plate 113 and the intermediate plate 111. Both ends of the first mating 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 component 5 is a rubber plate (in a specific embodiment, it is a 1.5mm thick nitrile rubber pad). There are two rubber plates, one of which is sandwiched between the first docking plate 12 and the intermediate plate 111, and the other is sandwiched between the second docking plate 22 and the intermediate plate 111.

[0045] In this technical solution, the vibration damping component 5 is implemented using two rubber plates. These two rubber plates are respectively sandwiched between the first mating plate 12 and the intermediate plate 111, and between the intermediate plate 111 and the second mating plate 22. This effectively isolates the interconnected rigid components, allowing the rubber plates to undergo greater shear deformation. It is worth emphasizing that because the first mating plate 12 passes through the assembly holes at both ends of the intermediate plate 111 and forms a mating point with the second mating plate 22 on the other side of the intermediate plate 111, the simultaneous placement of two rubber plates between them completely surrounds and encloses the intermediate plate 111. This objectively eliminates rigid contact between the first mating plate 12, the first fixed connector 11, and the second mating plate 22. (See [reference]). Figure 5 As shown, the two rubber sheets are bonded together at both ends of the intermediate plate 111, thus forming flexible support for both ends of the intermediate plate 111 (support in the tangential swing direction of the reservoir 200). Furthermore, the aforementioned first mating plate 12 is bent at both ends of the intermediate plate 111, and this bend is supported on the side of the two bonded rubber sheets away from the intermediate plate 111. That is, objectively, the two rubber sheets form a surrounding arrangement of the intermediate plate 111.

[0046] In some embodiments, the two ends of the first docking plate 12, the two ends of the second docking plate 22, and the two second fixed connecting members 21 are respectively bolted together by bolt assembly 4. That is, the components in this technical solution are assembled into one unit by a splicing method, which can facilitate the assembly of the liquid reservoir connection structure with the compressor 100 and the liquid reservoir 200, thereby reducing the assembly difficulty.

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

[0048] Calculations show that the liquid storage connection structure of this utility model is compatible with... Figure 2 Compared to the traditional liquid reservoir connection structure, the compressor of this invention, by placing the vibration damping component 5 between the first connecting bracket 1 and the second connecting bracket 2, increases the modal damping ratio by 3 times. (See [reference]). Figure 9 As shown, the vibration acceleration of the reservoir is 400 mm / s², which is lower than that of the traditional structure. 2 Reduced to 150 mm / s according to this utility model 2 The amplitude of the reservoir was significantly reduced.

[0049] Example 2:

[0050] For details, please refer to [link / reference]. Figure 7 and Figure 8 As shown, in some embodiments, the first connecting bracket 1 includes a first fixed connecting member 11 welded to the outer casing 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 casing of the liquid reservoir 200 and a connecting sleeve 32 fixedly connected (preferably welded) between the two second fixed connecting members 21. The connecting plate 31 passes through the connecting sleeve 32 and forms an annular gap 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. Thus, the aforementioned annular gap is specifically a rectangular annular gap.

[0051] In this technical solution, by setting a vibration damping component 5 in the annular gap, a surrounding arrangement is formed around the insertion mating area of ​​the connecting sleeve 32 and the connecting plate 31. The rigid connecting plate 31 and the connecting sleeve 32 are isolated by the vibration damping component 5. The shear deformation of the shear material is fully utilized to reduce the damping ratio of the first tangential mode of the liquid reservoir and increase the dissipation of vibration energy. The vibration reduction and noise reduction effect can be achieved without increasing the structural stiffness.

[0052] In some embodiments, the vibration damping element 5 is injection molded into the annular gap. The injection molding of the vibration damping element 5 ensures that the vibration damping element 5 can be more reliably positioned 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 clearance structure 1113 is formed in the area corresponding to the position of the connecting sleeve 32 on the intermediate plate 111. The clearance structure 1113 can be a clearance hole or a clearance groove. By setting the clearance structure 1113, part of the structure of the connecting sleeve 32 is located within the clearance 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 by welding on both sides.

[0055] According to an embodiment of the present invention, a compressor is also provided, including the above-described liquid receiver connection structure.

[0056] According to an embodiment of the present invention, an air conditioner is also provided, including the compressor described above.

[0057] It will be readily understood by those skilled in the art that, without 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 this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A liquid reservoir connection structure, characterized in that, It includes a first connecting bracket (1) for fixed connection to the housing of the compressor (100) and a second connecting bracket (2) for fixed connection to the housing of the liquid reservoir (200), the first connecting bracket (1) and the second connecting bracket (2) being detachably connected, and the first connecting bracket (1) and the second connecting bracket (2) being 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 casing 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 casing 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 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 first assembly hole (1111) is formed in the connection area between the first welding plate (112) and the intermediate plate (111), and a second assembly hole (1112) is formed in the connection area between the second welding plate (113) and the intermediate plate (111). The first mating plate ( The two ends of 12) 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). 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 component (5) is a rubber plate. There are two rubber plates. One of the two rubber plates is sandwiched between the first docking plate (12) and the intermediate plate (111), and the other is sandwiched between the second docking plate (22) and the intermediate plate (111).

4. The reservoir connection structure according to claim 3, characterized in that, The two ends of the first mating plate (12), the two ends of the second mating plate (22), and the two second fixed connecting members (21) are respectively bolted together by bolt assembly (4).

5. The liquid reservoir connection structure according to claim 4, characterized in that, The two ends of the rubber plate 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 forms an annular gap between the connecting plate (31) and the connecting sleeve (32). The vibration damping member (5) is embedded in the annular gap.

7. The reservoir connection structure according to claim 6, characterized in that, The vibration damping component (5) is installed in the annular gap by injection molding.

8. The liquid reservoir connection structure according to claim 6, characterized in that, 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 clearance structure (1113) is formed in the area where the intermediate plate (111) corresponds to the position of the connecting sleeve (32).

9. A compressor, characterized in that, The reservoir connection structure includes any one of claims 1 to 8.

10. An air conditioner, characterized in that, Includes the compressor as described in claim 9.

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