Dispersion hole air suction silencer and compressor

Abstract

The invention provides a dispersion hole air suction silencer and a compressor, relates to the field of compressors, and aims to solve the problem that the noise control effect of an existing compressor is poor. A first air suction pipe and a second air suction pipe which are communicated with a first cavity in a silencer shell are arranged and located on the different sides of the axis of a middle channel; the first air suction pipe and the second air suction pipe are distributed at intervals in the long axis direction of the oval outline of the compressor shell, airflow excitation positions can be dispersed, the problem of local excitation concentration is reduced, and excitation phases of the first air suction pipe and the second air suction pipe are opposite and can offset cavity modes in the short axis direction. And meanwhile, a plurality of dispersion holes are formed in the pipe wall of the side, away from the middle channel, of each air suction pipe to offset the cavity mode in the long axis direction, the multiple dispersion holes enable airflow to enter the first cavity in a more uniform and dispersed mode, and therefore the noise and the pulsation amplitude are further reduced.

Description

Technical Field

[0001] The invention relates to the field of compressors, and in particular to a dispersion hole air suction muffler and a compressor. Background Art

[0002] For a certain type of compressor, the noise and pulsation excitation sources of the cylinder head remain unchanged. After being reduced by the muffler, they are transmitted to the internal cavity of the muffler shell through the muffler suction port. The existing mass-produced suction muffler has only one suction port, so there is only one noise and pulsation excitation position output from the muffler suction port to the internal cavity of the muffler shell. The single-position excitation energy is large, which is easy to excite the cavity modal resonance and generate resonant noise. In addition, with single-position excitation, the first three order cavity modes are all excited to generate large resonant energy. The existing suction muffler mainly improves the sound transmission loss and pulsation attenuation effect inside the muffler through a single cavity, double cavity or multi-cavity combination, reduces the noise and pulsation excitation amplitude output from the muffler suction port to the internal cavity of the muffler shell, and optimizes the design only from the perspective of reducing excitation, without considering the position where the excitation is applied. In addition, there is only one muffler with only one suction port, that is, one excitation point, and the influence on the excitation energy and position of the cavity mode of the muffler shell is not considered, so the noise reduction effect is not ideal.

[0003] The existing patent involves a double-intake air muffler and compressor, which adjusts the single air intake port to a double air intake port distributed on both sides, thereby adjusting the single-position excitation to a double-position symmetrical excitation, reducing the noise and pulsation amplitude at the single air intake port, and then reducing the excitation amplitude applied to the muffler shell cavity mode. In addition, the opposite excitation phases can offset each other in the short-axis direction of the cavity mode, reduce the resonance energy and thus reduce noise. However, its double-position symmetrical excitation still has the problem of concentrated distribution of the excitation position. In addition, the resonance noise along the long axis of the compressor is not considered, resulting in a large noise in the muffler shell cavity, which is difficult to meet the requirements of the muffler effect. Summary of the invention

[0004] The purpose of the present invention is to provide a dispersed hole air intake silencer and a compressor in response to the defects of the prior art. A first intake pipe and a second intake pipe connected to the first cavity in the muffler shell are arranged, and the pipes are located on opposite sides of the axis of the middle channel and are spaced apart along the long axis direction of the elliptical contour of the compressor shell, which helps to disperse the position of the airflow excitation and reduce the problem of local excitation concentration. The excitation phases of the first intake pipe and the second intake pipe are opposite, and the cavity modes in the short axis direction can be offset by each other. At the same time, each intake pipe can also be provided with a plurality of dispersed holes on the pipe wall on the side away from the middle channel to offset the cavity mode in the long axis direction. The plurality of dispersed holes allow the airflow to enter the first cavity in a more uniform and dispersed manner, thereby further reducing the noise and pulsation amplitude.

[0005] The first object of the present invention is to provide a dispersed hole suction muffler, which adopts the following scheme:

[0006] It includes a muffler shell with a cavity, the cavity is installed with a partition to divide it into a first cavity and a second cavity, the first cavity and the second cavity are connected through an intermediate channel arranged on the partition, and the second cavity is used to connect to the compressor cylinder; the first cavity is connected to a first intake pipe and a second intake pipe, the first intake pipe and the second intake pipe are located on opposite sides of the axis of the intermediate channel, and the first intake pipe and the second intake pipe are spaced apart along the long axis direction of the elliptical contour of the compressor shell, and a plurality of dispersed holes are respectively provided on the pipe wall of the first intake pipe and the second intake pipe away from the intermediate channel.

[0007] Furthermore, the axis of the first air intake pipe is parallel to the axis of the second air intake pipe, and the two axes are symmetrically distributed relative to the axis of the middle channel.

[0008] Furthermore, taking the vertical plane where the axis of the middle channel is located as the reference plane, the first intake pipe and the second intake pipe pass through the reference plane respectively, and one end of the first intake pipe connected to the outside of the muffler shell and one end of the second intake pipe connected to the outside of the muffler shell are located on opposite sides of the reference plane.

[0009] Furthermore, one end of the first air intake pipe extends outside the cavity as a first air intake port, and one end connected to the cavity is a third air intake port; one end of the second air intake pipe extends outside the cavity as a second air intake port, and one end connected to the cavity is a fourth air intake port, and the third air intake port and the fourth air intake port are located on opposite sides of the axis of the middle channel.

[0010] Furthermore, the inner diameters of the first air intake pipe and the second air intake pipe are different. The first air intake pipe extends to a segment outside the cavity, and a dispersion hole is provided on one side close to the middle channel.

[0011] Furthermore, the dispersion holes on the first intake pipe are arranged in sequence at intervals along the axial direction of the first intake pipe, and the axes of the dispersion holes thereon are distributed radially along the first intake pipe; the dispersion holes on the second intake pipe are arranged in sequence at intervals along the axial direction of the second intake pipe, and the axes of the dispersion holes thereon are distributed radially along the second intake pipe.

[0012] Furthermore, the muffler shell is provided with a first guide groove and a second guide groove, the first guide groove is distributed along the axial direction of the first intake pipe and is recessed relative to the muffler shell, the dispersed holes on the first intake pipe are distributed in the first guide groove, the second guide groove is distributed along the axial direction of the second intake pipe and is recessed relative to the muffler shell, and the dispersed holes on the second intake pipe are distributed in the second guide groove.

[0013] Furthermore, the muffler shell includes a first muffler shell and a second muffler shell that are interlocked with each other, the first intake pipe and the first muffler shell are an integral structure, and the second intake pipe and the second muffler shell are an integral structure.

[0014] The second object of the present invention is to provide a compressor with a dispersion hole suction muffler, using the dispersion hole suction muffler as described in the first object.

[0015] Furthermore, it also includes a shell, the horizontal cross-section of the shell is an elliptical profile, a cavity is formed inside the shell, and the dispersion hole suction muffler is arranged in the cavity.

[0016] Compared with the prior art, the present invention has the following advantages and positive effects:

[0017] In view of the current problem of poor noise control effect of compressors, a first intake pipe and a second intake pipe connected to the first cavity in the muffler shell are provided, which are located on opposite sides of the axis of the middle channel and are spaced apart along the long axis direction of the elliptical contour of the compressor shell, which helps to disperse the position of airflow excitation and reduce the problem of local excitation concentration. The excitation phases of the first intake pipe and the second intake pipe are opposite and can offset each other's cavity modes in the short axis direction. At the same time, each intake pipe can also be provided with a plurality of dispersion holes on the pipe wall on the side away from the middle channel to offset the cavity mode in the long axis direction. The plurality of dispersion holes allow the airflow to enter the first cavity in a more uniform and dispersed manner, thereby further reducing the noise and pulsation amplitude. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0019] Figure 1 Schematic diagram of the dispersed hole suction silencer installed in the compressor casing in Examples 1 and 2 of the present invention.

[0020] Figure 2 Schematic diagram of the dispersed hole air suction silencer in Examples 1 and 2 of the present invention.

[0021] Figure 3 It is a cross-sectional schematic diagram of the first cavity of the dispersed hole suction silencer in Examples 1 and 2 of the present invention.

[0022] Figure 4 Schematic diagram of the distribution of the first cavity and the second cavity of the dispersed hole suction silencer in Examples 1 and 2 of the present invention.

[0023] Among them, 1. shell; 2. cavity; 3. shell air intake pipe; 4. dispersion hole air intake muffler; 41. first muffler shell; 42. second muffler shell; 43. partition; 44. first cavity; 45. second cavity; 46. first air intake pipe; 47. second air intake pipe; 48. first air intake port; 49. second air intake port; 410. third air intake port; 411. fourth air intake port; 412. first exhaust port; 413. middle pipe; 414. first dispersion hole; 415. second dispersion hole; 416. third dispersion hole; 417. second guide groove. DETAILED DESCRIPTION

[0024] Example 1

[0025] In a typical embodiment of the present invention, Figure 1-Figure 4 As shown, a dispersion hole suction silencer is provided.

[0026] The suction silencer of the current compressor has a large cavity 2 noise. The single suction port is adjusted to a double suction port distributed on both sides, so that the single position excitation is adjusted to a double position symmetrical excitation. However, the double position symmetrical excitation still has the problem of concentrated distribution of the excitation position. In addition, the resonance noise along the long axis of the compressor is not considered, resulting in a large noise in the cavity 2 of the muffler shell, which is difficult to meet the requirements of the muffler effect. In this regard, the present embodiment provides a dispersed hole suction silencer 4, which adopts a double cavity structure, and sets a double suction pipe on the initial suction cavity to form a main double suction port, and arranges dispersed holes on the double suction pipes to form a multi-point distributed suction position, so that the airflow enters the initial suction cavity in a more uniform and dispersed manner, thereby further reducing the noise and pulsation amplitude. The double suction ports are located on both sides of the long axis of the shell 1, and the excitation phases are opposite, which can offset each other in the short axis direction. The dispersed holes are located on the suction pipe wall on the side of the suction pipe away from the middle channel, which can offset each other in the long axis direction. The cavity mode, reduce the resonance energy, and reduce the noise.

[0027] like Figure 1 As shown, the main body of the dispersed hole suction muffler 4 is a muffler shell, a cavity is formed inside the muffler shell, a partition 43 is arranged inside the cavity to separate the cavity into a first cavity 44 and a second cavity 45, and the first cavity 44 and the second cavity 45 are connected through an intermediate channel arranged on the partition 43. In this embodiment, the intermediate channel can be formed by arranging an intermediate pipe 413 on the partition 43, and the intermediate pipe 413 is fixed on the partition 43, so that an intermediate channel is formed inside the intermediate pipe 413. In other optional embodiments, a hole can be directly opened on the partition 43 as the intermediate channel.

[0028] Taking the intermediate passage formed by the intermediate tube 413 as an example, the first cavity 44 and the second cavity 45 are connected through the intermediate tube 413. The first cavity 44 absorbs the refrigerant and then inputs it into the second cavity 45 through the intermediate tube 413, and then sends the refrigerant into the cylinder of the compressor through the second cavity 45. In this process, the refrigerant undergoes compression and expansion during the flow, thereby reducing noise.

[0029] In conventional compressors, a single air intake port is usually used for the first cavity 44, and all the refrigerant medium sucked into the cylinder flows into the first cavity 44 through the single air intake port, which results in high noise and pulsation amplitude because the excitation is mainly concentrated in one position. In this embodiment, the first cavity 44 is connected with a first air intake pipe 46 and a second air intake pipe 47, the first air intake pipe 46 and the second air intake pipe 47 are located on the opposite sides of the axis of the middle channel, and the first air intake pipe 46 and the second air intake pipe 47 are spaced apart along the long axis direction of the elliptical profile of the compressor housing 1, and a plurality of dispersed holes are respectively provided on the pipe wall of the first air intake pipe 46 and the second air intake pipe 47 away from the middle channel.

[0030] Taking the vertical plane where the axis of the middle channel is located and parallel to the minor axis direction of the elliptical profile as the reference plane, the dispersion holes of the first suction pipe 46 and the dispersion holes of the second suction pipe 47 are located on different sides of the reference plane, so that the refrigerant medium can not only enter the first cavity 44 from the openings at the ends of the first suction pipe 46 and the second suction pipe 47, but also enter the first cavity 44 through the dispersion holes. The refrigerant flow and impact effect of a single suction port are reduced.

[0031] One end of the first air intake pipe 46 extends out of the cavity as the first air intake port 48, and one end connected to the cavity is the third air intake port 410; one end of the second air intake pipe 47 extends out of the cavity as the second air intake port 49, and one end connected to the cavity is the fourth air intake port 411. The third air intake port 410 and the fourth air intake port 411 are located on opposite sides of the axis of the middle channel.

[0032] By adjusting the single air intake port to double air intake ports distributed on both sides of the muffler shell, the noise and pulsation amplitude generated by the single air intake port can be greatly reduced. By dispersing the excitation position, the excitation amplitude applied to the muffler shell cavity mode is reduced, thereby reducing the resonance energy and noise of cavity 2.

[0033] Specifically, the first air inlet 48 and the second air inlet 49 are designed so that the airflow excitation is no longer concentrated at one point, but is dispersed to both sides of the muffler shell along the short axis direction of the compressor shell 1. This dispersed excitation method reduces the vibration and noise at a single position, so that the overall noise level is reduced. In addition, the dispersed holes are set so that the airflow excitation is also dispersed to both sides of the muffler shell along the long axis direction of the compressor to offset the cavity mode in the long axis direction, and due to the dispersion of the excitation position, the excitation amplitude applied to the muffler shell cavity mode is also reduced accordingly. The resonance energy of cavity 2 is reduced, further reducing the generation of noise.

[0034] The axis of the first air intake pipe 46 is parallel to the axis of the second air intake pipe 47, and the two axes are symmetrically distributed relative to the axis of the middle channel to offset the cavity mode in the long axis direction.

[0035] like Figure 3 As shown, taking the vertical plane where the axis of the middle channel is located as the reference plane, the first intake pipe 46 and the second intake pipe 47 pass through the reference plane respectively, and one end of the first intake pipe 46 connected to the outside of the muffler shell and one end of the second intake pipe 47 connected to the outside of the muffler shell are located on the opposite sides of the reference plane, which can extend the length of the first intake pipe 46 and the second intake pipe 47 so that more dispersed holes can be distributed on their pipe walls.

[0036] The conventional design without the partition 43 and the intermediate pipe 413 may cause uneven airflow, increase noise and pulsation. In this embodiment, a partition 43 is provided inside the muffler shell to separate the internal cavity into a first cavity 44 and a second cavity 45, which are connected through the intermediate pipe 413. This helps to make the airflow more stable and reduce turbulence and noise.

[0037] Improper or asymmetric position of the air intake port may lead to inconsistent excitation phases, increase resonance energy and noise. In this embodiment, the first air intake port 48 and the second air intake port 49 are arranged on opposite sides of the vertical plane where the major axis of the elliptical profile of the compressor housing 1 is located as the reference plane, and the first air intake port 48 and the second air intake port 49 are distributed in symmetrical areas to form a symmetrical design. The excitation phases of the two air intake ports are opposite, which can offset the cavity modes in the short axis direction, further reduce the resonance energy and reduce noise. By connecting to the compressor cylinder through the second cavity 45, the airflow can be smoothed and the noise and pulsation when entering the cylinder can be reduced.

[0038] Through the design of the first intake port 48 on the first intake pipe 46 and the second intake port 49 on the second intake pipe 47, the use of the partition 43 and the intermediate pipe 413, the symmetrical positions of the intake ports and the method of connecting the compressor cylinder, the noise and pulsation problems existing in the traditional compressor intake silencer are effectively solved, and the performance and efficiency of the compressor are improved.

[0039] like Figure 3 and Figure 4 As shown, the first air intake pipe 46 and the second air intake pipe 47 are respectively connected to the first cavity 44 of the muffler shell, one end of the first air intake pipe 46 extends into the first cavity 44 to form a third air intake port 410, and the other end is located outside the first cavity 44 as a first air intake port 48. One end of the second air intake pipe 47 extends into the first cavity 44 to form a fourth air intake port 411, and the other end is located outside the first cavity 44 as a fourth air intake port 411. It is ensured that the airflow can smoothly enter the first cavity 44 from the outside through the first air intake pipe 46 and the second air intake pipe 47.

[0040] The third air intake port 410 and the fourth air intake port 411 are staggered and located on the opposite sides of the axis of the intermediate pipe 413. This helps to reduce the collision and vortex of the air flow in the muffler shell, avoids the backflow caused by the different intake volumes in the face-to-face situation, and thus reduces noise and pulsation.

[0041] like Figure 2 As shown, the muffler shell includes a first muffler shell 41 and a second muffler shell 42 that are interlocked, a first air intake pipe 46 is integrated into the side wall of the first muffler shell 41, and a second air intake pipe 47 is integrated into the side wall of the second muffler shell 42. In this embodiment, the muffler shell is composed of two interlockable parts, which is convenient for installation and maintenance. The first air intake pipe 46 is integrated into the side wall of the first muffler shell 41, and the second air intake pipe 47 is integrated into the side wall of the second muffler shell 42. Not only does it simplify the structure, but it also improves the overall air tightness and stability, which is convenient for demolding during injection molding.

[0042] The axis of the first air intake pipe 46 is coplanar with the axis of the second air intake pipe 47 , and the axes of the two pipes are located in the same plane, which helps to maintain the balance and stability of the airflow.

[0043] like Figure 4 As shown, the intermediate pipe 413 is installed on the partition 43 in the muffler shell, and is used to connect the first cavity 44 and the second cavity 45. One end of the intermediate pipe 413 is connected to the first cavity 44 as the first exhaust port 412, and the other end is connected to the second cavity 45 as the second exhaust port, ensuring that the airflow can flow smoothly from the first cavity 44 to the second cavity 45. The first air intake port 48 and the second air intake port 49 are located on the opposite sides of the axis of the intermediate pipe 413, which helps to balance the airflow of the two air intake ports and reduce the noise and pulsation caused by uneven airflow.

[0044] Specifically, the first air intake pipe 46 and the second air intake pipe 47 are connected to the outside to form two air intake ports of the first cavity 44, which also helps to improve the stability of the airflow. When the airflow enters from the two air intake ports at the same time, they will merge with each other in the muffler shell to form a more stable airflow field. A stable airflow field helps to reduce turbulence and eddy currents, thereby reducing noise and pulsation amplitude.

[0045] The axis of the first intake pipe 46 is parallel to the axis of the second intake pipe 47 and is also parallel to the short axis of the elliptical profile of the compressor housing 1, optimizing the airflow path and making it possible to better offset the excitation phase, thereby reducing the conflict and vortex of the airflow in the muffler housing.

[0046] The first air intake port 48 is designed as an expansion port, which can receive more external refrigerant, slow down the air flow speed and reduce noise. In addition, the first air intake pipe 46 and the second air intake pipe 47 have different inner diameters. The first air intake pipe 46 extends to the segment outside the cavity, and a dispersion hole is provided on the side close to the middle channel, so that the inner diameter of the first air intake pipe 46 is larger than the inner diameter of the second air intake pipe 47. Air intake pipes with different inner diameters can accurately adjust the air flow, improve energy efficiency and reduce energy consumption.

[0047] like Figure 2 and Figure 3 As shown, by designing the inner diameter of the first suction pipe 46 to be larger than the second suction pipe 47, a more flexible airflow distribution can be achieved. This helps to accurately adjust the airflow according to different load conditions or work requirements. Under low load conditions, the smaller second suction pipe 47 can limit the airflow, thereby reducing unnecessary energy consumption. Under high load conditions, the larger first suction pipe 46 can ensure sufficient refrigerant supply. Optimized airflow distribution and regulation help improve the overall efficiency of the compressor. By reducing energy consumption and increasing refrigeration capacity, the performance of the compressor can be significantly improved.

[0048] The axis of the middle pipe 413 is perpendicular to the axes of the first intake pipe 46 and the second intake pipe 47, ensuring that the airflow can enter the middle pipe 413 vertically, further reducing airflow conflicts and vortices.

[0049] The double air inlet and staggered air inlet design can balance the airflow of the two air inlets, reducing the noise and pulsation caused by uneven airflow. The reasonable air inlet layout and the intermediate pipe 413 design can optimize the airflow path, reduce the conflict and vortex of the airflow in the muffler shell, and thus reduce noise and pulsation.

[0050] like Figure 3 As shown, the first dispersed holes 414 on the first air intake pipe 46 are sequentially spaced along the axial direction of the first air intake pipe 46, and the axes of the first dispersed holes 414 thereon are distributed radially along the first air intake pipe 46; the second dispersed holes 415 on the second air intake pipe 47 are sequentially spaced along the axial direction of the second air intake pipe 47, and the axes of the second dispersed holes 415 thereon are distributed radially along the second air intake pipe 47. The first air intake pipe 46 extends to the section outside the cavity, and a third dispersed hole 416 is provided on the side close to the middle channel.

[0051] The arrangement of multiple dispersion holes can disperse and reduce the energy of the noise and pressure pulsation excitation source transmitted through the dispersion hole suction silencer 4, and the excitation position is no longer concentrated, but dispersed to various positions of the cavity 2, further reducing the energy of exciting the resonance of the cavity 2 and reducing noise.

[0052] Specifically, the design of the dispersion holes first helps to achieve uniform distribution of airflow. When the refrigerant enters the suction pipe from the suction port, if it flows directly into the compressor cavity, eddies and turbulence may be generated due to uneven flow rate or pressure changes. The presence of dispersion holes can disperse this airflow into multiple small streams, allowing them to flow into the cavity more evenly. This can reduce the collision and turbulence of the airflow in the cavity and improve the stability and efficiency of the airflow.

[0053] When air flows in a pipe, it will generate noise, especially when the flow rate is fast or there are sudden changes in the pipe (such as elbows, flares, etc.). The design of the dispersion holes can slow down the air flow speed and reduce the impact of the air flow on the pipe wall, thereby reducing the noise level. In addition, the dispersion holes can also disperse the noise source to a larger area, making the noise more uniform and softer, and reducing interference with the surrounding environment. The design of the dispersion holes also helps to improve the efficiency of the compressor. By optimizing the distribution and speed of the air flow, the loss and resistance of the air flow inside the compressor can be reduced, and the utilization rate of the air flow can be improved. In addition, the dispersion holes can also reduce the eddy and turbulent phenomena inside the compressor, reduce energy consumption and noise levels, and further improve the efficiency of the compressor.

[0054] like Figure 2 and Figure 3 As shown, the muffler shell is provided with a first guide groove and a second guide groove 417, the first guide groove is distributed axially along the first intake pipe 46 and is recessed relative to the muffler shell, the dispersed holes on the first intake pipe 46 are distributed in the first guide groove, the second guide groove 417 is distributed axially along the second intake pipe 47 and is recessed relative to the muffler shell, and the dispersed holes on the second intake pipe 47 are distributed in the second guide groove 417.

[0055] Specifically, the first guide groove and the second guide groove 417 are respectively distributed along the axial direction of the first suction pipe 46 and the second suction pipe 47, which can effectively guide the airflow to flow along a specific path. When the refrigerant enters the suction pipe from the suction port, it will be guided by the guide groove and flow into the inside of the muffler shell more smoothly, reducing the turbulence and collision of the airflow. There are dispersion holes distributed inside the guide groove, so that the airflow can be further dispersed when passing through the guide groove. The dispersed airflow is smaller and more uniform, which helps to reduce the vortex and turbulence of the airflow inside the muffler shell, thereby improving the stability and efficiency of the airflow.

[0056] The design of the guide groove and the dispersion hole can slow down the airflow speed and reduce the impact of the airflow on the muffler shell wall. This impact is one of the main causes of noise, so by slowing down the airflow speed and dispersing the airflow, the noise level can be effectively reduced. The dispersion hole disperses the airflow into multiple small streams, which makes the noise source also dispersed to a larger area. When multiple small streams flow at the same time, the noise they generate will be superimposed on each other and partially offset, thereby further reducing the overall noise level.

[0057] like Figure 2 As shown, the muffler shell includes a first muffler shell 41 and a second muffler shell 42 that are interlocked, a first air intake pipe 46 and the first muffler shell 41 are an integral structure, and a second air intake pipe 47 and the second muffler shell 42 are an integral structure. The design of the guide groove and the dispersion hole not only optimizes the air flow distribution and heat dissipation effect, but also enhances the structural strength of the muffler shell. By increasing the wall thickness of the shell and changing its shape, it can be made more durable and the stability and reliability of the overall structure can be improved.

[0058] Example 2

[0059] In another typical embodiment of the present invention, Figure 1-Figure 4 As shown, a compressor with a dispersion hole suction muffler 4 is provided, using the dispersion hole suction muffler as in Example 1.

[0060] It also includes an outer shell 1, the horizontal cross-section of the outer shell 1 is an elliptical profile, a cavity 2 is formed inside the outer shell 1, a dispersion hole suction muffler 4 is arranged in the cavity 2, a silencer shell suction pipe is provided on the outer shell 1, and a first suction port 48 faces the outer shell suction pipe 3.

[0061] The first air intake port 48 can absorb most of the medium input through the shell air intake pipe 3, and the refrigerant medium that escapes into the cavity 2 of the compressor shell 1 can enter the dispersion hole air intake muffler 4 through the second air intake port 49, the second dispersion hole 415, the third dispersion hole 416 and the first dispersion hole 414, and be input into the cylinder together.

[0062] A first intake pipe 46 and a second intake pipe 47 connected to the first cavity 44 in the muffler shell are arranged on opposite sides of the axis of the middle channel and are spaced apart along the long axis direction of the elliptical contour of the compressor shell 1, which helps to disperse the position of the airflow excitation and reduce the problem of local excitation concentration. The excitation phases of the first intake pipe 46 and the second intake pipe 47 are opposite and can offset each other's short-axis direction cavity mode. At the same time, each intake pipe can also be provided with a plurality of dispersion holes on the pipe wall on the side away from the middle channel to offset the long-axis direction cavity mode. The plurality of dispersion holes allow the airflow to enter the first cavity 44 in a more uniform and dispersed manner, thereby further reducing the noise and pulsation amplitude.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dispersion hole suction muffler, characterized in that: It includes a muffler shell with a cavity, the cavity is installed with a partition to divide it into a first cavity and a second cavity, the first cavity and the second cavity are connected through an intermediate channel arranged on the partition, and the second cavity is used to connect to the compressor cylinder; the first cavity is connected to a first intake pipe and a second intake pipe, the first intake pipe and the second intake pipe are located on opposite sides of the axis of the intermediate channel, and the first intake pipe and the second intake pipe are spaced apart along the long axis direction of the elliptical contour of the compressor shell, and a plurality of dispersed holes are respectively provided on the pipe wall of the first intake pipe and the second intake pipe away from the intermediate channel.

2. The dispersed hole air suction muffler according to claim 1, characterized in that: The axis of the first air intake pipe is parallel to the axis of the second air intake pipe, and the two axes are symmetrically distributed relative to the axis of the middle channel.

3. The dispersed hole air suction muffler according to claim 2, characterized in that: Taking the vertical plane where the axis of the middle channel is located as the reference plane, the first intake pipe and the second intake pipe pass through the reference plane respectively, and one end of the first intake pipe connected to the outside of the muffler shell and one end of the second intake pipe connected to the outside of the muffler shell are located on different sides of the reference plane.

4. The dispersed hole air suction muffler according to claim 1, characterized in that: One end of the first air intake pipe extends outside the cavity as the first air intake port, and one end connected to the cavity is the third air intake port; one end of the second air intake pipe extends outside the cavity as the second air intake port, and one end connected to the cavity is the fourth air intake port, and the third air intake port and the fourth air intake port are located on opposite sides of the axis of the middle channel.

5. The dispersed hole air suction muffler according to claim 4, characterized in that: The first air intake pipe and the second air intake pipe have different inner diameters. The first air intake pipe extends to a segment outside the cavity and has a dispersion hole on one side close to the middle channel.

6. The dispersed hole air suction muffler according to claim 1, characterized in that: The dispersion holes on the first intake pipe are arranged in sequence at intervals along the axial direction of the first intake pipe, and the axes of the dispersion holes thereon are distributed radially along the first intake pipe; the dispersion holes on the second intake pipe are arranged in sequence at intervals along the axial direction of the second intake pipe, and the axes of the dispersion holes thereon are distributed radially along the second intake pipe.

7. The dispersed hole air suction muffler according to claim 6, characterized in that: The muffler shell is provided with a first guide groove and a second guide groove, the first guide groove is distributed along the axial direction of the first intake pipe and is recessed relative to the muffler shell, the dispersion holes on the first intake pipe are distributed in the first guide groove, the second guide groove is distributed along the axial direction of the second intake pipe and is recessed relative to the muffler shell, and the dispersion holes on the second intake pipe are distributed in the second guide groove.

8. The dispersed hole air suction muffler according to claim 7, characterized in that: The muffler shell comprises a first muffler shell and a second muffler shell which are buckled together, the first air intake pipe and the first muffler shell are an integrated structure, and the second air intake pipe and the second muffler shell are an integrated structure.

9. A compressor with a dispersion hole suction muffler, characterized in that: Utilize the dispersed hole suction silencer as described in any one of claims 1-8.

10. The compressor with a dispersion hole suction muffler according to claim 9, characterized in that: The utility model also comprises a shell, wherein the horizontal cross section of the shell is an elliptical profile, a cavity is formed inside the shell, and a dispersion hole air suction muffler is arranged in the cavity.

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