Compressor cavity noise reduction structure and compressor

Abstract

The utility model provides a compressor cavity noise reduction structure and a compressor, relates to the technical field of compressors, and solves the technical problems of noise and vibration caused by resonance of a first-order radial mode and a structural mode of a compressor shell cavity in the prior art. According to the compressor cavity noise reduction structure and the compressor, the compressor comprises a compressor shell and a motor assembly; a cavity is formed between the motor assembly and the compressor shell, at least one separation barrel is arranged in the cavity, the axial direction of the at least one separation barrel is parallel to the axial direction of the compressor shell, and the at least one separation barrel divides the cavity into at least two cavities communicating with each other. According to the compressor cavity noise reduction structure and the compressor, the radial vibration of the shell is improved, and noise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a compressor cavity noise reduction structure and a compressor. Background Art

[0002] The axial mode of the acoustic cavity of the compressor shell is usually below 500Hz, and the radial mode is usually in the frequency band of 500-1200Hz, and the compressor has multiple structural modes in this frequency band, such as the distributor mode, pump body mode, etc. In particular, the pump body mode is easy to resonate with the radial mode of the shell acoustic cavity, and the energy passes through the welding point to cause abnormal radial vibration of the shell to produce noise, or the noise is directly radiated through the shell. The only technology in the prior art is to change the structural mode to stagger the resonance with the acoustic cavity mode, but changing the structure, especially the pump body structure, usually increases the cost, and the structure becomes complicated and difficult to mass produce. At present, there is no technology to change the radial mode of the shell acoustic cavity to stagger the resonance with the structural mode.

[0003] The prior art discloses a compressor and a refrigeration system having the same, and a non-metallic elastic member is arranged between the pump body and the housing, which can effectively improve the acoustic cavity mode of the compressor and the shaking problem of the movement. However, the device essentially weakens the vibration transmission between the pump body and the housing, and has little to do with the resonance of the staggered acoustic cavity and the structural mode. For the housing cavity, the device also only affects the axial mode.

[0004] The prior art also discloses a cavity partition structure for a compressor. This patent installs a circular plate with a central connecting hole on the motor rotor to isolate the front and rear sound cavities of the motor. For the shell cavity, this device only affects the axial mode. Utility Model Content

[0005] The purpose of the utility model is to provide a compressor cavity noise reduction structure and a compressor to solve the technical problem of noise and vibration caused by the first-order radial mode and structural mode resonance of the compressor housing cavity in the prior art. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model provides a compressor cavity noise reduction structure, wherein the compressor comprises a compressor housing and a motor assembly;

[0008] There is a cavity between the motor assembly and the compressor housing, and at least one partition cylinder is arranged in the cavity. The axial direction of at least one partition cylinder is parallel to the axial direction of the compressor housing, and at least one partition cylinder divides the cavity into at least two interconnected chambers.

[0009] Preferably, the top port of the partition cylinder is sealingly connected to the upper cover of the compressor housing.

[0010] Preferably, the partition cylinder and the upper cover of the compressor housing are integrally cast or 3D printed.

[0011] Preferably, the partition cylinder is coaxially arranged with the compressor housing.

[0012] Preferably, a connecting bracket is provided between the partition cylinder and the side wall of the compressor housing.

[0013] Preferably, the partition cylinder is arranged on the insulating frame of the motor assembly.

[0014] Preferably, at least two of the partition cylinders are provided, and at least two of the partition cylinders have different calibers and are coaxially arranged.

[0015] Preferably, the bottom port of the partition cylinder wraps around the upper balancing block of the motor assembly.

[0016] Preferably, at least one flow hole is provided on the side wall of the partition cylinder.

[0017] Preferably, the axial cross-section of the partition cylinder is a circular structure; or, the axial cross-section of the partition cylinder is a square structure; or, the axial cross-section of the partition cylinder is a polygonal structure.

[0018] Preferably, the separation cylinder is a cylinder structure with a gradually changing diameter.

[0019] A compressor comprises the compressor cavity noise reduction structure as described above.

[0020] The beneficial effects of the present invention are as follows: the compressor cavity noise reduction structure and the compressor provided by the present invention have at least one partition cylinder arranged in the cavity between the motor assembly and the compressor housing, the partition cylinder is axially parallel to the compressor housing, and the partition cylinder can divide the cavity into at least two interconnected chambers, and the refrigerant can flow freely between the at least two interconnected chambers. By setting the partition cylinder, the radius of the cavity is equivalently changed and thus the modal frequency is changed to stagger the resonance of the cavity and the pump body structure, especially the resonance with the second-order bending of the pump body, and the first-order radial mode of the cavity is better changed, thereby improving the radial vibration of the housing and reducing noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of a compressor in the prior art;

[0023] Figure 2 It is a structural schematic diagram of the first embodiment of the compressor cavity of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the separation cylinder of the utility model;

[0025] Figure 4 This is an AA cross-sectional view of the partition cylinder of the utility model;

[0026] Figure 5 It is a structural schematic diagram of a second embodiment of a compressor cavity of the utility model;

[0027] Figure 6 It is a structural schematic diagram of the separation cylinder of the utility model;

[0028] Figure 7 It is a structural schematic diagram of a partition cylinder according to a third embodiment of the utility model;

[0029] Figure 8 It is a structural schematic diagram of a partition cylinder according to a fourth embodiment of the utility model;

[0030] Fig. 9 It is a structural schematic diagram of a partition cylinder according to a fifth embodiment of the utility model;

[0031] Fig.10 It is a structural schematic diagram of a separating cylinder according to a sixth embodiment of the utility model;

[0032] Fig.11 It is a structural schematic diagram of a partition cylinder of the seventh embodiment of the utility model.

[0033] In the figure, 1 is the compressor housing; 2 is the motor assembly; 3 is the cavity; 4 is the partition cylinder; 5 is the connecting bracket; 6 is the flow hole; 7 is the ring segment; and 8 is the straight segment. DETAILED DESCRIPTION

[0034] Please refer to the attached figure below Figures 1 to 11And the text content understands the content of the utility model and the difference between the utility model and the prior art. The following is a further detailed description of the technical solution (including the preferred technical solution) of the utility model by means of the accompanying drawings and the enumeration of some optional embodiments of the utility model. It should be noted that: any technical feature and any technical solution in the present embodiment are one or more of a variety of optional technical features or optional technical solutions. In order to describe the need for brevity, it is impossible to exhaustively list all the alternative technical features and alternative technical solutions of the utility model in this document, and it is not convenient for the implementation of each technical feature to emphasize that it is one of the optional multiple implementations, so those skilled in the art should know that: any technical means provided by the utility model can be replaced or any two or more technical means or technical features provided by the utility model can be combined with each other to obtain a new technical solution. Any technical feature and any technical solution in this embodiment do not limit the scope of protection of the utility model. The scope of protection of the utility model should include any alternative technical solutions that can be thought of by those skilled in the art without creative labor and new technical solutions obtained by combining any two or more technical means or technical features provided by the utility model.

[0035] In the description of the present utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0037] The utility model provides a compressor cavity noise reduction structure and a compressor which can improve radial vibration of a shell and reduce noise.

[0038] Combine the following Figures 1 to 11The technical solution provided by the utility model is described in more detail.

[0039] The utility model provides a compressor cavity noise reduction structure, the compressor comprising a compressor housing 1 and a motor assembly 2;

[0040] There is a cavity 3 between the motor assembly 2 and the compressor housing 1, and at least one partition cylinder 4 is arranged in the cavity 3. The axial direction of at least one partition cylinder 4 is parallel to the axial direction of the compressor housing 1, and at least one partition cylinder 4 divides the cavity 3 into at least two interconnected chambers.

[0041] The compressor cavity noise reduction structure provided by the utility model has at least one partition cylinder 4 arranged in the cavity 3 existing between the motor assembly 2 and the compressor housing 1, the partition cylinder 4 is axially parallel to the compressor housing 1, and the partition cylinder 4 can divide the cavity 3 into at least two interconnected chambers, and the refrigerant can flow freely between the at least two interconnected chambers. By setting the partition cylinder 4, the radius of the cavity 3 is equivalently changed and then the modal frequency is changed to stagger the resonance of the cavity 3 and the pump body structure, especially the resonance with the second-order bending of the pump body, and better change the first-order radial mode of the cavity 3, thereby improving the radial vibration of the housing and reducing noise.

[0042] The compressor cavity noise reduction structure provided by the utility model has a simple structure, is easy to install, has obvious effects, does not require excessive changes to the original pump body structure, and can be applicable to a variety of compressors.

[0043] It should be noted that the axial direction of the partition cylinder 4 is parallel to the axial direction of the compressor housing 1, which means that the internal channel of the partition cylinder 4 is consistent with the direction of the internal channel of the compressor housing 1. For example, the top port and the bottom port of the partition cylinder 4 are arranged in the up and down direction, the inner cavity of the compressor housing 1 is arranged in the up and down direction, the motor assembly 2 is arranged in the middle of the compressor housing 1, and the cavity 3 above the motor assembly 2 is arranged in the up and down direction. The partition cylinder 4 divides the cavity 3 into two inner and outer chambers. The internal chamber is the chamber inside the partition cylinder 4, and the chamber between the partition cylinder 4 and the compressor housing 1 is the external chamber.

[0044] In some embodiments of the present invention, the top port of the partition cylinder 4 is sealed and connected to the upper cover of the compressor housing 1 .

[0045] In some of the above-mentioned embodiments of the utility model, the bottom port of the partition cylinder 4 is sealed and connected to the top wall of the compressor casing 1, which can significantly change the acoustic cavity mode to stagger the resonance of the cavity 3 and the pump body structure, thereby improving the radial vibration of the casing and reducing noise.

[0046] Preferably, the bottom port of the partition cylinder 4 is as close to the motor assembly 2 as possible, so as to further change the effect of the acoustic cavity mode to stagger the resonance of the cavity 3 and the pump body structure, thereby improving the radial vibration of the shell and reducing noise.

[0047] Specifically, considering that the lower surface of the top wall of the compressor housing 1 is not flush and the two are difficult to connect, the partition cylinder 4 and the upper cover of the compressor housing 1 are integrally cast or 3D printed.

[0048] In some embodiments of the present invention, the partition cylinder 4 is coaxially arranged with the compressor housing 1 .

[0049] It can be understood that the coaxial arrangement of the partition cylinder 4 and the compressor housing 1 means that the central axis of the partition cylinder 4 coincides with the central axis of the compressor housing 1, thereby ensuring that the partition cylinder 4 and the compressor housing 1 are in a symmetrical arrangement with respect to the central axis, thereby better changing the acoustic cavity mode to stagger the resonance of the cavity 3 and the pump body structure, thereby improving the radial vibration of the housing and reducing noise.

[0050] In some embodiments of the present invention, a connecting bracket 5 is provided between the partition cylinder 4 and the side wall of the compressor housing 1 .

[0051] In some of the above-mentioned embodiments of the utility model, the partition cylinder 4 is connected to the compressor housing 1 through a connecting bracket 5, so that the partition cylinder 4 is fixed in the cavity 3 to change the acoustic cavity mode and stagger the resonance between the cavity 3 and the pump body structure, thereby improving the radial vibration of the housing and reducing noise.

[0052] In some embodiments of the utility model, if the motor assembly 2 is provided with an insulating frame, the partition cylinder 4 can also be provided on the insulating frame of the motor assembly 2, so as to fix the partition cylinder 4 in the cavity 3 to change the acoustic cavity mode and stagger the resonance between the cavity 3 and the pump body structure, thereby improving the radial vibration of the shell and reducing noise.

[0053] In some embodiments of the present invention, at least two of the partition cylinders 4 are provided, and at least two of the partition cylinders 4 have different calibers and are coaxially arranged.

[0054] In some of the above-mentioned embodiments of the utility model, the separation cylinder 4 can be arranged into at least two, at least two separation cylinders 4 have different calibers, and at least two separation cylinders 4 are coaxially arranged, so as to divide the cavity 3 into at least three interconnected chambers, thereby changing the radius of the cavity 3 and then changing the modal frequency, so as to stagger the resonance of the cavity 3 and the pump body structure, especially the resonance with the second-order bending of the pump body, and better change the first-order radial mode of the cavity 3, thereby improving the radial vibration of the shell and reducing noise.

[0055] In some embodiments of the present invention, the bottom port of the partition cylinder 4 wraps the upper balancing block of the motor assembly 2 .

[0056] In some of the above-mentioned embodiments of the present invention, the bottom port of the separation cylinder 4 needs to avoid the motor assembly 2 to avoid interference with the motor assembly 2, mainly to avoid the upper balancing block of the motor rotor of the motor assembly 2. Therefore, preferably, the inner diameter of the separation cylinder 4 requires the bottom port to wrap around the upper balancing block of the motor rotor.

[0057] In some embodiments of the present invention, at least one flow hole 6 is provided on the side wall of the partition cylinder 4 .

[0058] In some of the above embodiments of the present invention, the circulation holes 6 are used to increase the circulation of the refrigerant in the cavity 3 , and the shape, number and arrangement of the circulation holes 6 can be adjusted according to actual needs.

[0059] In some embodiments of the present invention, the cross-section of the partition cylinder 4 is a circular structure; or, the cross-section of the partition cylinder 4 is a square structure; or, the cross-section of the partition cylinder 4 is a polygonal structure.

[0060] In other embodiments of the present invention, the separation cylinder 4 is a cylinder structure with a gradually changing diameter.

[0061] The utility model also provides a compressor, comprising the compressor cavity 3 noise reduction structure as described above.

[0062] Embodiment 1:

[0063] The compressor cavity noise reduction structure provided by the utility model is as follows: Figure 2-4 As shown, the compressor includes a compressor housing 1 and a motor assembly 2 .

[0064] There is a cavity 3 between the motor assembly 2 and the compressor housing 1, and a partition cylinder 4 is arranged in the cavity 3. The top port of the partition cylinder 4 is sealed and connected to the upper cover of the compressor housing 1, and the bottom port of the partition cylinder 4 wraps the upper balancing block of the motor assembly 2.

[0065] The axial direction of the partition cylinder 4 is parallel to the axial direction of the compressor housing 1 , and the partition cylinder 4 divides the cavity 3 into two interconnected chambers.

[0066] The axial cross section of the separation cylinder 4 is a circular structure.

[0067] Furthermore, the compressor housing 1 includes an outer shell and an upper cover, and the partition cylinder 4 is arranged on the upper cover.

[0068] Embodiment 2:

[0069] The compressor cavity noise reduction structure provided by the utility model is as follows: Figure 5-6 As shown, the compressor includes a compressor housing 1 and a motor assembly 2 .

[0070] There is a cavity 3 between the motor assembly 2 and the compressor housing 1, and a partition cylinder 4 is arranged in the cavity 3. A connecting bracket 5 is arranged between the partition cylinder 4 and the side wall of the compressor housing 1, and the bottom port of the partition cylinder 4 wraps the upper balancing block of the motor assembly 2.

[0071] The connecting bracket 5 includes an annular segment 7 and a straight segment 8 . The annular segment 7 is connected to the side wall of the compressor housing 1 , and the straight segment 8 is connected between the annular segment 7 and the partition cylinder 4 .

[0072] The axial direction of the partition cylinder 4 is parallel to the axial direction of the compressor housing 1 , and the partition cylinder 4 divides the cavity 3 into two interconnected chambers.

[0073] The axial cross section of the separation cylinder 4 is a circular structure.

[0074] Furthermore, the partition cylinder 4 is made of metal or non-metal material.

[0075] Embodiment 3:

[0076] The difference between this embodiment 3 and embodiment 1 is that: Figure 7 As shown, the axial cross section of the separation cylinder 4 is a square structure.

[0077] Embodiment 4:

[0078] The difference between this embodiment 4 and embodiment 1 is that: Figure 8 As shown, the axial cross section of the separation cylinder 4 is a triangular structure.

[0079] Embodiment 5:

[0080] The difference between this embodiment 5 and embodiment 1 is that: Fig. 9 As shown, at least one flow hole 6 is provided on the partition cylinder 4 .

[0081] Embodiment 6:

[0082] The difference between this embodiment 6 and embodiment 1 is that: Fig.10 As shown, the separation cylinder 4 is a cylinder structure with a gradually changing diameter.

[0083] Embodiment 7:

[0084] The difference between this embodiment 7 and embodiment 1 is that: Fig.11As shown, two partition cylinders 4 are provided, and the two partition cylinders 4 have different calibers and are coaxially arranged.

[0085] The top ports of the two partition cylinders 4 are sealed and connected to the top wall of the compressor housing 1 , and the bottom ports of the two partition cylinders 4 wrap the upper balancing block of the motor assembly 2 .

[0086] The axial directions of the two partition cylinders 4 are parallel to the axial direction of the compressor housing 1 , and the two partition cylinders 4 divide the cavity 3 into three interconnected chambers.

[0087] The axial cross section of the separation cylinder 4 is a circular structure.

[0088] In the description of this specification, the description with reference to the terms "example", "embodiment" or "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0089] Of course, the invention of the present invention is not limited to the above-mentioned implementation modes. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A compressor cavity noise reduction structure, characterized in that: The compressor comprises a compressor housing and a motor assembly; There is a cavity between the motor assembly and the compressor housing, and at least one partition cylinder is arranged in the cavity. The axial direction of at least one partition cylinder is parallel to the axial direction of the compressor housing, and at least one partition cylinder divides the cavity into at least two interconnected chambers.

2. The compressor cavity noise reduction structure according to claim 1, characterized in that: The top port of the partition cylinder is sealed and connected to the upper cover of the compressor housing.

3. The compressor cavity noise reduction structure according to claim 2, characterized in that: The partition cylinder and the upper cover of the compressor housing are integrally cast or 3D printed.

4. The compressor cavity noise reduction structure according to claim 1, characterized in that: The partition cylinder is coaxially arranged with the compressor housing.

5. The compressor cavity noise reduction structure according to claim 1, characterized in that: A connecting bracket is arranged between the partition cylinder and the side wall of the compressor housing.

6. The compressor cavity noise reduction structure according to claim 1, characterized in that: The partition cylinder is arranged on the insulating frame of the motor assembly.

7. The compressor cavity noise reduction structure according to claim 1, characterized in that: At least two of the partition cylinders are provided, and the at least two partition cylinders have different calibers and are coaxially arranged.

8. The compressor cavity noise reduction structure according to any one of claims 1 to 7, characterized in that: The bottom port of the partition cylinder wraps around the upper balancing block of the motor assembly.

9. The compressor cavity noise reduction structure according to any one of claims 1 to 7, characterized in that: At least one flow hole is arranged on the side wall of the partition cylinder.

10. The compressor cavity noise reduction structure according to any one of claims 1 to 7, characterized in that: The axial cross section of the partition cylinder is a circular structure; or, the axial cross section of the partition cylinder is a square structure; or, the axial cross section of the partition cylinder is a polygonal structure.

11. The compressor cavity noise reduction structure according to any one of claims 1 to 7, characterized in that: The separation cylinder is a cylinder structure with a gradually changing diameter.

12. A compressor, characterized in that: It comprises the compressor cavity noise reduction structure as described in any one of claims 1-11.

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