Compressor

Abstract

The invention provides a compressor, and relates to the technical field of air compression. The compressor comprises a body, the body internally comprises a first cavity, a second cavity and a communicating hole, and the communicating hole communicates with the first cavity and the second cavity; the compression assembly is arranged in the first cavity, and the compression assembly comprises an exhaust hole; and the noise reduction component is connected with the compression assembly and penetrates through the communicating hole, the noise reduction component comprises a noise reduction cavity and a noise reduction hole, the noise reduction cavity communicates with the exhaust hole, the noise reduction hole is located in the second cavity, and the noise reduction hole communicates with the second cavity and the noise reduction cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of air compression, and in particular to a compressor. Background Art

[0002] In the related art, an air compressor generates high-pressure airflow inside during operation. The high-pressure airflow generates relatively loud noise when circulating inside the air compressor, so that the air compressor has technical defects of loud operating noise and poor user experience.

[0003] Therefore, how to overcome the above-mentioned technical defects has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] To this end, the present invention proposes a compressor.

[0006] In view of this, in the compressor provided by the present invention, the compressor includes: a main body, the main body includes a first cavity, a second cavity and a connecting hole, the connecting hole connects the first cavity and the second cavity; a compression assembly, arranged in the first cavity, the compression assembly includes an exhaust hole; a noise reduction component, connected to the compression assembly and passed through the connecting hole, the noise reduction component includes a noise reduction cavity and a noise reduction hole, the noise reduction cavity is connected to the exhaust hole, the noise reduction hole is located in the second cavity, and the noise reduction hole connects the second cavity and the noise reduction cavity.

[0007] The present application defines a compressor that can compress air to output a high-pressure airflow. The compressor includes a body and a compression assembly. The body is the main frame structure of the compressor, and the body is used to position, support and protect other working structures on the compressor. Among them, a first cavity, a second cavity and a connecting hole are formed in the body. The first cavity and the second cavity are connected through the connecting hole. The compression assembly is arranged in the first cavity. The compression assembly can compress the air and discharge the high-pressure airflow formed after compression into the connecting hole through the exhaust hole on the compression assembly, so that the high-pressure airflow is pressed into the second cavity. That is, the air pressure in the second cavity is greater than the air pressure in the first cavity, the first cavity is a low-pressure chamber, and the second cavity is a high-pressure chamber.

[0008] During operation, the compression assembly outputs high-pressure airflow to the connecting hole through the exhaust hole. When the high-pressure airflow passes through the narrow and short connecting hole, it will generate large aerodynamic noise. In addition, after the high-pressure airflow passes through the connecting hole, it will impact the inner wall of the second cavity, causing large airflow pulsation, resulting in large resonant radiation noise from the main body.

[0009] On this basis, the compressor also includes a noise reduction component, which is connected to the compression assembly, and the noise reduction component extends to the second cavity through a connecting hole. A noise reduction cavity and a noise reduction hole are formed on the noise reduction component, one end of the noise reduction cavity is connected to the exhaust hole on the compression assembly, and the other end of the noise reduction cavity extends from the connecting hole to the second cavity, and is connected to the noise reduction hole in the second cavity. The high-pressure airflow output by the exhaust hole passes through the noise reduction cavity and the noise reduction hole and is discharged into the second cavity. In this process, with the help of the noise reduction cavity and the noise reduction hole extending from the first cavity to the second cavity in the noise reduction component, the flow path of the high-pressure airflow before entering the second cavity can be extended, thereby increasing the sound insulation of the noise reduction component and reducing the aerodynamic noise. At the same time, the noise reduction component can absorb part of the impact of the high-pressure airflow instead of the main body, thereby reducing the airflow pulsation and reducing the resonant radiation noise of the main body.

[0010] It can be seen that by setting the above-mentioned noise reduction components, the aerodynamic noise and resonance radiation noise of the compressor can be reduced to reduce the noise generated by the compressor during operation, thereby solving the technical defects of high working noise and poor user experience in the related technology. This can achieve the technical effect of optimizing the compressor structure, improving the noise reduction ability of the compressor, and optimizing the user experience.

[0011] In addition, the compressor provided by the present invention may also have the following additional technical features:

[0012] In some technical solutions of the present invention, optionally, the noise reduction component includes: a cover body, which is buckled on the outside of the exhaust hole; the cover body includes a top wall and side walls, the top wall and the side walls enclose a noise reduction cavity, and the noise reduction hole is arranged on the side wall.

[0013] In this technical solution, the structure of the noise reduction component is refined. Specifically, the noise reduction component includes a cover body. The cover body is connected to the compression assembly, and the cover body is snapped onto the outside of the exhaust hole. The cover body and the compression assembly enclose a noise reduction cavity. After the cover body is assembled, the cover body is inserted into the connecting hole. During operation, the high-pressure airflow discharged from the exhaust hole is first poured into the cover body, and finally discharged into the second cavity through the noise reduction hole extending into the second cavity. Compared with the solution in which the high-pressure airflow is directly discharged into the second cavity through the connecting hole, the high-pressure airflow needs to flow into the second cavity through the noise reduction cavity and the noise reduction hole, which extends the flow path of the high-pressure airflow and reduces the pneumatic noise of the high-pressure airflow.

[0014] On this basis, the cover body includes a top wall and a side wall. The side wall is cylindrical, the side wall is connected to the compression assembly, the top wall covers the upper end of the side wall, and the top wall is arranged opposite to the exhaust hole on the compression assembly. The side wall is inserted into the connecting hole, and the top wall is located in the second cavity. Among them, the noise reduction hole is opened on the side wall, and the high-pressure airflow changes its flow direction after being blocked by the top wall and diffuses from the noise reduction hole to the surrounding of the cover body. In this process, the top wall accepts the impact of the high-pressure airflow instead of the main body to avoid the high-pressure airflow discharged from the exhaust hole directly impacting the inner surface of the second cavity, thereby reducing the resonance radiation noise of the main body and improving the working stability of the compressor. Thereby achieving the technical effect of optimizing the compressor structure, improving the noise reduction ability of the compressor, and optimizing the user experience.

[0015] Specifically, the connection between the cover body and the compression assembly is a threaded connection, an interference connection, a snap connection, etc.

[0016] In some technical solutions of the present invention, optionally, the number of the noise reduction holes is 2N, where N is an integer greater than 0; the 2N noise reduction holes are symmetrically distributed on the side wall.

[0017] In this technical solution, the number of noise reduction holes is 2N, where N is an integer greater than 0. That is, the cover body includes N groups of noise reduction holes, each group specifically includes two noise reduction holes, and the 2N noise reduction holes are symmetrically distributed on the side wall of the cover body.

[0018] By symmetrically distributing 2N noise reduction holes on the cover, the force on the cover can be optimized during the exhaust process, avoiding the cover from vigorous vibration due to uneven circumferential force when discharging high-pressure airflow into the second cavity, and reducing the resonance radiation noise of the cover. This achieves the technical effect of optimizing the cover structure, improving the noise reduction ability of the compressor, and optimizing the user experience.

[0019] Specifically, the cover body includes two noise reduction holes, the two noise reduction holes share the same center line, and the center lines of the two noise reduction holes are perpendicular to the axis of the cover body.

[0020] In some technical solutions of the present invention, optionally, the aperture of the noise reduction hole is D1, and the aperture of the exhaust hole is D2; D1 and D2 satisfy the following relationship: 1≤2×D1 2 ÷D2 2 ≤3.

[0021] In this technical solution, the size relationship between the noise reduction hole and the exhaust hole is defined. Specifically, the aperture of the noise reduction hole on the cover is D1, and the aperture of the exhaust hole on the compression assembly is D2. On this basis, D1 and D2 satisfy the relationship: 1≤2×D1 2 ÷D2 2 ≤3.

[0022] By limiting 1≤2×D1 2 ÷D2 2, which can ensure that the aperture of the noise reduction hole can match the exhaust flow of the corresponding exhaust hole, avoid excessive accumulation of high-pressure airflow in the cover body to produce obvious turbulent noise, thereby reducing the working noise of the compressor while ensuring the exhaust flow.

[0023] By defining 2×D1 2 ÷D2 2 ≤3, the size of the noise reduction hole and the cover can be reduced on the basis of meeting the exhaust flow demand, providing convenient conditions for the miniaturization and lightweight design of the cover and the compressor, thereby reducing the size and weight of the compressor and improving the practicability of the compressor.

[0024] In some technical solutions of the present invention, optionally, the outer diameter of the side wall is D3, and the aperture of the connecting hole is D4; D3 and D4 satisfy the following relationship: D4-D3≥2mm.

[0025] In this technical solution, the size relationship between the side wall and the connecting hole is defined. Specifically, the outer diameter of the side wall on the cover body is D3, and the diameter of the connecting hole on the body is D4, on this basis, D4-D3≥2mm.

[0026] By limiting D4-D3 to ≥ 2mm, a sufficiently large gap can be created between the connecting hole and the cover body. During the operation of the compression assembly, the cover body will inevitably produce radial vibrations. The gap left by the above-mentioned size limitation can prevent the vibrating cover body from colliding with the hole wall of the connecting hole, prevent the cover body and the main body from generating resonance noise, thereby reducing the working noise of the compressor and improving the user experience. At the same time, the gap left by the above-mentioned size limitation can provide convenient conditions for the assembly of the cover body and reduce the possibility of damage to the cover body when inserted into the connecting hole.

[0027] In some technical solutions of the present invention, optionally, the thickness of the top wall ranges from greater than or equal to 1 mm to less than or equal to 3 mm; the thickness of the side wall ranges from greater than or equal to 1 mm to less than or equal to 3 mm.

[0028] In this technical solution, the thickness of the cover body is limited. Specifically, the thickness of the cover body includes the thickness of the side wall and the thickness of the top wall, wherein the thickness of the side wall must be greater than or equal to 1 mm and less than or equal to 3 mm. Similarly, the thickness of the top wall must be greater than or equal to 1 mm and less than or equal to 3 mm.

[0029] By limiting the thickness of the cover to be greater than or equal to 1mm, it can be ensured that the cover can withstand the impact of high-pressure airflow and avoid deformation or damage of a too thin cover due to impact. By limiting the thickness of the cover to be less than or equal to 3mm, it can be ensured that there is a sufficiently large noise reduction cavity in the cover. On the one hand, it can ensure that the volume of the noise reduction cavity matches the exhaust flow of the compression component, and on the other hand, it can avoid turbulent noise generated by a too narrow noise reduction cavity. This can achieve the technical effect of optimizing the size of the cover, improving the stability of the cover structure, and reducing the working noise of the cover.

[0030] In some technical solutions of the present invention, optionally, the body further includes an air intake channel and an air exhaust channel; the air intake channel connects the outside of the body and the first cavity; the air exhaust channel connects the outside of the body and the second cavity.

[0031] In this technical solution, an air inlet channel and an air exhaust channel are also provided on the body, wherein one end of the air inlet channel is connected to the first cavity, and the other end of the air inlet channel is connected to the space outside the body. Correspondingly, one end of the air exhaust channel is connected to the second cavity, and the other end of the air exhaust channel is connected to the space outside the body.

[0032] During operation, the compression assembly in the first cavity draws air from the outside through the air inlet channel, and the air is compressed by the compression assembly and discharged into the second cavity through the noise reduction component and the connecting hole, and finally the high-pressure gas in the second cavity is discharged to the outside of the compressor through the exhaust channel to output the high-pressure airflow to the designated area. Specifically, the air inlet channel can be connected to an air storage structure such as an air tank through an air inlet pipe, and the exhaust channel can be connected to a device that requires high-pressure airflow to work through an air outlet pipe.

[0033] In some technical solutions of the present invention, optionally, in the circumferential direction of the cover body, the angle between the center line of the noise reduction hole and the center line of the exhaust passage is in the range of: greater than or equal to 30° and less than or equal to 150°.

[0034] In this technical solution, the deflection angle between the noise reduction hole and the exhaust passage is limited. Specifically, with the cover body as a reference, in the circumferential direction of the cover body, the angle between the center line of the noise reduction hole and the center line of the exhaust passage is α, and the angle α must be greater than or equal to 30° and less than or equal to 150°.

[0035] By limiting the above angle range, it is possible to ensure that there is a sufficient deflection angle between the noise reduction hole and the exhaust passage, thereby preventing the high-pressure airflow ejected from the noise reduction hole from directly entering the exhaust passage. In actual operation, the compression assembly outputs intermittent high-pressure airflow due to the presence of the reed valve assembly. By limiting the deflection angle range, the stability and continuity of the airflow output from the exhaust passage can be ensured, thereby improving the practicality of the compressor.

[0036] In some technical solutions of the present invention, optionally, the compression assembly further includes a groove, the exhaust hole is located in the groove, and the cover body covers the groove.

[0037] In this technical solution, a groove is provided on the compression assembly, and an exhaust hole is opened in the groove. The side wall of the cover body is snapped into the opening of the groove, and the side wall of the cover body is opposite to the bottom surface of the groove. During operation, the high-pressure airflow output by the exhaust hole first flows into the groove, and then flows into the second cavity through the noise reduction cavity and the noise reduction hole. By providing the groove, the flow path of the high-pressure airflow can be further extended in cooperation with the noise reduction cavity and the noise reduction hole, thereby reducing the aerodynamic noise generated by the high-pressure airflow in the compressor. At the same time, by providing the groove, the distance between the exhaust hole and the top wall of the cover body can be increased, reducing the impact of the high-pressure airflow on the top wall, thereby reducing the vibration noise of the cover body. Thereby achieving the technical effect of optimizing the structure of the compression assembly, reducing the working noise of the compressor, and improving the user experience.

[0038] In some technical solutions of the present invention, optionally, the compressor further includes: a reed valve assembly, which is arranged in the compression assembly, and the reed valve assembly is used to control the on-off state of the exhaust hole.

[0039] In this technical solution, the compressor also includes a reed valve assembly, which is installed at the exhaust hole of the compression assembly. Specifically, the reed valve assembly is used to control the on-off state of the exhaust hole. When the air pressure at the exhaust hole reaches a predetermined pressure, the reed valve assembly automatically opens the exhaust hole, and the high-pressure airflow can then be discharged into the noise reduction component. When the pressure at the exhaust hole drops below the predetermined pressure, the reed valve assembly automatically closes the exhaust hole. By setting the reed valve assembly, the sound pressure ratio of the compression assembly can be improved, and the reversal of the moving disk on the compression assembly caused by the intake of the exhaust hole can be avoided, thereby improving the reliability and stability of the compressor.

[0040] Among them, under the action of the reed valve, the compression component outputs a high-pressure pulse airflow. If the high-pressure pulse airflow directly impacts the main body, it will cause the main body to generate more obvious resonant radiation noise. For this reason, the present application provides a noise reduction component to replace the main body to receive the impact of the high-pressure pulse airflow, thereby effectively reducing the resonant radiation noise generated by the main body, thereby achieving the technical effect of reducing the working noise of the compressor and improving the user experience.

[0041] In some technical schemes of the present invention, optionally, the main body includes: an outer shell, including an opening, and the compression assembly is arranged in the outer shell; a partition, connected to the outer shell, the outer shell and the partition enclose a first cavity, and the connecting hole is located on the partition; an upper cover, buckled on the opening of the outer shell, and the upper cover and the partition enclose a second cavity.

[0042] In this technical solution, the structure of the body is defined. Specifically, the body includes a shell, a partition and an upper cover. The shell is columnar and has an opening at the top. The compression assembly is arranged in the shell. The air intake passage is arranged on the shell, and the air intake passage communicates with the inside and outside of the shell. The compression assembly is communicated with the air intake passage, and the external gas to be compressed enters the compression assembly through the air intake passage.

[0043] The partition is mounted on the shell, and the partition and the shell together enclose a first cavity, wherein a communication hole is provided on the partition, and the communication hole penetrates the partition. The upper cover is buckled on the opening at the top of the shell, and the exhaust channel is provided on the upper cover, and a second cavity is enclosed between the upper cover and the partition, and the high-pressure airflow discharged into the second cavity through the noise reduction component is finally discharged from the compressor through the exhaust channel.

[0044] During the assembly process, the compression assembly is first installed inside the housing, and the noise reduction component is installed on the compression assembly and snapped onto the exhaust hole of the compression assembly. Then, the connecting hole on the partition is aligned with the noise reduction component, and the partition is pressed down so that the noise reduction component passes through the partition, and the partition and the housing are connected. Finally, the upper cover is snapped onto the housing and the partition to complete the assembly.

[0045] In some technical solutions of the present invention, optionally, the compression assembly also includes a mounting groove, which is connected to the exhaust hole, and the compressor also includes: a sealing assembly, which is arranged in the mounting groove and surrounds the noise reduction component, and the sealing assembly is used to seal the compression assembly and the partition.

[0046] In this technical solution, the compression assembly is also provided with a mounting groove, which surrounds the groove and is connected to the exhaust hole. On this basis, the compressor also includes a sealing assembly, which is embedded in the mounting groove and surrounds the noise reduction component.

[0047] The sealing assembly can achieve axial floating sealing. Specifically, after the compression assembly is turned on, a high-pressure airflow is filled into the installation groove connected to the exhaust hole. Under the action of the high-pressure airflow, the sealing assembly is lifted up to rest against the lower surface of the partition, thereby sealing the gap between the compression assembly and the partition. In this case, even if the high-pressure gas in the second cavity flows back to the first cavity through the gap between the connecting hole and the noise reduction component, it cannot spread outward across the sealing assembly, thereby ensuring that the exhaust pressure in the second cavity meets the standard and is stable, reducing the leakage of high-pressure gas, and improving the working stability and reliability of the compressor.

[0048] In some technical solutions of the present invention, optionally, the compression assembly includes: a static plate connected to the body, an exhaust hole is provided on the static plate, and a noise reduction component is connected to the static plate; a moving plate is provided on the static plate, the moving plate can move relative to the static plate, and the static plate and the moving plate compress the air through relative movement.

[0049] In this technical solution, the compression assembly includes a static plate and a dynamic plate. The static plate is fixed in the housing, the groove and the exhaust hole are arranged on the static plate, and the noise reduction component is fixed on the top of the static plate. The dynamic plate is connected to the static plate, and the dynamic plate is located on the side of the static plate away from the partition. The dynamic plate includes a flow channel connecting the air inlet channel and the exhaust hole. During operation, the dynamic plate can achieve gas compression by moving relative to the static plate to obtain a high-pressure airflow.

[0050] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0052] Figure 1 A schematic structural diagram of a compressor according to an embodiment of the present invention is shown;

[0053] Figure 2 for Figure 1 A partial enlarged view of the compressor in area A in the illustrated embodiment;

[0054] Figure 3 A schematic structural diagram of a compressor according to an embodiment of the present invention is shown;

[0055] Figure 4 A schematic structural diagram of a compressor according to an embodiment of the present invention is shown;

[0056] Figure 5 A schematic structural diagram of a compressor according to an embodiment of the present invention is shown;

[0057] Figure 6 A schematic structural diagram of a noise reduction component according to an embodiment of the present invention is shown;

[0058] Figure 7 A schematic structural diagram of a noise reduction component according to an embodiment of the present invention is shown;

[0059] Figure 8 A schematic structural diagram of a noise reduction component according to an embodiment of the present invention is shown;

[0060] Fig. 9 A graph of noise data of a compressor according to an embodiment of the present invention is shown.

[0061] in, Figures 1 to 9 The corresponding relationship between the reference numerals and component names in the figure is:

[0062] 100 compressor, 110 body, 1102 first cavity, 1104 second cavity, 1106 connecting hole, 1108 intake channel, 1109 exhaust channel, 112 shell, 114 partition, 116 upper cover, 120 compression assembly, 1202 exhaust hole, 1204 groove, 1206 mounting groove, 122 static plate, 124 dynamic plate, 130 noise reduction component, 1302 noise reduction cavity, 1304 noise reduction hole, 132 cover, 1322 side wall, 1324 top wall, 140 reed valve assembly, 150 sealing assembly. DETAILED DESCRIPTION

[0063] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0064] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0065] Refer to the following Figures 1 to 9 A compressor according to some embodiments of the present invention is described.

[0066] like Figure 1 and Figure 2 As shown, one embodiment of the present invention proposes a compressor 100, which includes: a body 110, the body 110 includes a first cavity 1102, a second cavity 1104 and a connecting hole 1106, and the connecting hole 1106 connects the first cavity 1102 and the second cavity 1104; a compression component 120, which is arranged in the first cavity 1102, and the compression component 120 includes an exhaust hole 1202; a noise reduction component 130, which is connected to the compression component 120 and is passed through the connecting hole 1106, and the noise reduction component 130 includes a noise reduction chamber 1302 and a noise reduction hole 1304, the noise reduction chamber 1302 is connected to the exhaust hole 1202, the noise reduction hole 1304 is located in the second cavity 1104, and the noise reduction hole 1304 connects the second cavity 1104 and the noise reduction chamber 1302.

[0067] The present application defines a compressor 100, which can compress air to output a high-pressure airflow. The compressor 100 includes a body 110 and a compression assembly 120, wherein the body 110 is the main frame structure of the compressor 100, and the body 110 is used to position, support and protect other working structures on the compressor 100. Among them, a first cavity 1102, a second cavity 1104 and a connecting hole 1106 are formed in the body 110, and the first cavity 1102 and the second cavity 1104 are connected through the connecting hole 1106, and the compression assembly 120 is arranged in the first cavity 1102, and the compression assembly 120 can compress the air and discharge the high-pressure airflow formed after compression into the connecting hole 1106 through the exhaust hole 1202 on the compression assembly 120, so that the high-pressure airflow is pressed into the second cavity 1104. That is, the air pressure in the second cavity 1104 is greater than the air pressure in the first cavity 1102 , the first cavity 1102 is a low-pressure chamber, and the second cavity 1104 is a high-pressure chamber.

[0068] During operation, the compression assembly 120 outputs high-pressure airflow to the connecting hole 1106 through the exhaust hole 1202. When the high-pressure airflow passes through the narrow and short connecting hole 1106 during the circulation inside the connecting hole 1106, it will generate large aerodynamic noise. In addition, after the high-pressure airflow passes through the connecting hole 1106, it will impact the inner wall of the second cavity 1104, causing large airflow pulsation, resulting in large resonant radiation noise generated by the main body 110.

[0069] On this basis, the compressor 100 further includes a noise reduction component 130, which is connected to the compression assembly 120 and extends to the second cavity 1104 through the connecting hole 1106. A noise reduction chamber 1302 and a noise reduction hole 1304 are formed on the noise reduction component 130, one end of the noise reduction chamber 1302 is connected to the exhaust hole 1202 on the compression assembly 120, and the other end of the noise reduction chamber 1302 extends from the connecting hole 1106 to the second cavity 1104 and is connected to the noise reduction hole 1304 in the second cavity 1104. The high-pressure airflow output from the exhaust hole 1202 is discharged into the second cavity 1104 through the noise reduction chamber 1302 and the noise reduction hole 1304. In this process, by means of the noise reduction cavity 1302 and the noise reduction hole 1304 extending from the first cavity 1102 to the second cavity 1104 in the noise reduction component 130, the flow path of the high-pressure airflow before entering the second cavity 1104 can be extended, thereby increasing the sound insulation of the noise reduction component 130 and reducing the aerodynamic noise. At the same time, the noise reduction component 130 can replace the body 110 to absorb a part of the impact of the high-pressure airflow, thereby reducing the airflow pulsation and reducing the resonance radiation noise of the body 110.

[0070] It can be seen that by providing the above-mentioned noise reduction component 130, the aerodynamic noise and resonant radiation noise of the compressor 100 can be reduced, so as to reduce the noise generated by the compressor 100 during operation, thereby solving the technical defects of high working noise and poor user experience in the related art. This further achieves the technical effect of optimizing the structure of the compressor 100, improving the noise reduction capability of the compressor 100, and optimizing the user experience.

[0071] like Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, in some embodiments of the present invention, optionally, the noise reduction component 130 includes: a cover body 132, which is snapped onto the outside of the exhaust hole 1202; the cover body 132 includes a top wall 1324 and a side wall 1322, the top wall 1324 and the side wall 1322 enclose a noise reduction cavity 1302, and the noise reduction hole 1304 is provided on the side wall 1322.

[0072] In this embodiment, the structure of the noise reduction component 130 is refined. Specifically, the noise reduction component 130 includes a cover 132. The cover 132 is connected to the compression assembly 120, and the cover 132 is buckled on the outside of the exhaust hole 1202. The cover 132 and the compression assembly 120 enclose a noise reduction chamber 1302. After the cover 132 is assembled, the cover 132 is inserted into the connecting hole 1106. During operation, the high-pressure airflow discharged from the exhaust hole 1202 is first poured into the cover 132, and finally discharged into the second cavity 1104 through the noise reduction hole 1304 extending into the second cavity 1104. Compared with the solution in which the high-pressure airflow is directly discharged into the second cavity 1104 through the connecting hole 1106, the high-pressure airflow needs to flow into the second cavity 1104 through the noise reduction chamber 1302 and the noise reduction hole 1304, which prolongs the flow path of the high-pressure airflow and reduces the pneumatic noise of the high-pressure airflow.

[0073] On this basis, the cover body 132 includes a top wall 1324 and a side wall 1322. The side wall 1322 is cylindrical, connected to the compression assembly 120, and the top wall 1324 covers the upper end of the side wall 1322. The top wall 1324 is arranged opposite to the exhaust hole 1202 on the compression assembly 120. The side wall 1322 is arranged in the connecting hole 1106, and the top wall 1324 is located in the second cavity 1104. Among them, the noise reduction hole 1304 is opened on the side wall 1322. After being blocked by the top wall 1324, the high-pressure airflow changes its flow direction and diffuses from the noise reduction hole 1304 to the surrounding of the cover body 132. In this process, the top wall 1324 replaces the body 110 to accept the impact of the high-pressure airflow, so as to avoid the high-pressure airflow discharged from the exhaust hole 1202 directly impacting the inner surface of the second cavity 1104, thereby reducing the resonance radiation noise of the body 110 and improving the working stability of the compressor 100. This can optimize the structure of the compressor 100, improve the noise reduction capability of the compressor 100, and optimize the user experience.

[0074] Specifically, the connection between the cover body 132 and the compression assembly 120 is a threaded connection, an interference connection, a snap connection, etc.

[0075] like Figure 2 and Figure 6 As shown, in some embodiments of the present invention, optionally, the number of the noise reduction holes 1304 is 2N, where N is an integer greater than 0; the 2N noise reduction holes 1304 are symmetrically distributed on the side wall 1322.

[0076] In this embodiment, the number of the noise reduction holes 1304 is 2N, where N is an integer greater than 0. That is, the cover 132 includes N groups of noise reduction holes 1304, each group specifically includes two noise reduction holes 1304, and the 2N noise reduction holes 1304 are symmetrically distributed on the side wall 1322 of the cover 132.

[0077] By symmetrically distributing 2N noise reduction holes 1304 on the cover body 132, the force on the cover body 132 can be optimized during the exhaust process, avoiding the cover body 132 from vigorous vibration due to uneven circumferential force when discharging high-pressure airflow into the second cavity 1104, and reducing the resonance radiation noise of the cover body 132. This achieves the technical effect of optimizing the structure of the cover body 132, improving the noise reduction capability of the compressor 100, and optimizing the user experience.

[0078] Specifically, the cover body 132 includes two noise reduction holes 1304 , the two noise reduction holes 1304 share the same center line, and the center lines of the two noise reduction holes 1304 are perpendicular to the axis of the cover body 132 .

[0079] like Figure 2 and Figure 6As shown, in some embodiments of the present invention, optionally, the aperture of the noise reduction hole 1304 is D1, and the aperture of the exhaust hole 1202 is D2; D1 and D2 satisfy the following relationship: 1≤2×D1 2 ÷D2 2 ≤3.

[0080] In this embodiment, the size relationship between the noise reduction hole 1304 and the exhaust hole 1202 is defined. Specifically, the aperture of the noise reduction hole 1304 on the cover body 132 is D1, and the aperture of the exhaust hole 1202 on the compression assembly 120 is D2. On this basis, D1 and D2 satisfy the relationship: 1≤2×D1 2 ÷D2 2 ≤3.

[0081] By limiting 1≤2×D1 2 ÷D2 2 , which can ensure that the aperture of the noise reduction hole 1304 can match the exhaust flow of the corresponding exhaust hole 1202, avoid excessive accumulation of high-pressure airflow in the cover body 132 to produce obvious turbulent noise, thereby reducing the working noise of the compressor 100 on the basis of ensuring the exhaust flow.

[0082] By defining 2×D1 2 ÷D2 2 ≤3, the size of the noise reduction hole 1304 and the cover body 132 can be reduced on the basis of meeting the exhaust flow demand, providing convenient conditions for the miniaturization and lightweight design of the cover body 132 and the compressor 100, thereby reducing the size and weight of the compressor 100 and improving the practicability of the compressor 100.

[0083] Specifically, the distance between the center line of the noise reduction hole 1304 and the upper surface of the partition 114 is H, and H and D1 satisfy the following relationship: H≥D1÷2, so as to ensure that the noise reduction hole 1304 is entirely located inside the second cavity 1104 .

[0084] like Figure 2 and Figure 6 As shown, in some embodiments of the present invention, optionally, the outer diameter of the side wall 1322 is D3, and the aperture of the connecting hole 1106 is D4; D3 and D4 satisfy the following relationship: D4-D3≥2mm.

[0085] In this embodiment, the size relationship between the side wall 1322 and the communication hole 1106 is defined. Specifically, the outer diameter of the side wall 1322 on the cover body 132 is D3, and the diameter of the communication hole 1106 on the body 110 is D4, on which basis D4-D3≥2mm.

[0086] By limiting D4-D3≥2mm, a sufficiently large gap can be created between the connecting hole 1106 and the cover body 132. During the operation of the compression assembly 120, the cover body 132 will inevitably generate radial vibrations. The gap left by the above-mentioned size limitation can prevent the vibrating cover body 132 from colliding with the hole wall of the connecting hole 1106, and prevent the cover body 132 and the body 110 from generating resonance noise, thereby reducing the working noise of the compressor 100 and improving the user experience. At the same time, the gap left by the above-mentioned size limitation can provide convenient conditions for the assembly of the cover body 132, and reduce the possibility of damage to the cover body 132 when inserted into the connecting hole 1106.

[0087] In some embodiments of the present invention, optionally, the thickness of the top wall 1324 is in the range of greater than or equal to 1 mm and less than or equal to 3 mm; the thickness of the side wall 1322 is in the range of greater than or equal to 1 mm and less than or equal to 3 mm.

[0088] In this embodiment, the thickness of the cover body 132 is limited. Specifically, the thickness of the cover body 132 includes the thickness of the side wall 1322 and the thickness of the top wall 1324, wherein the thickness of the side wall 1322 must be greater than or equal to 1 mm and less than or equal to 3 mm. Similarly, the thickness of the top wall 1324 must be greater than or equal to 1 mm and less than or equal to 3 mm.

[0089] By limiting the thickness of the cover 132 to be greater than or equal to 1 mm, it can be ensured that the cover 132 can withstand the impact of the high-pressure airflow, and avoid deformation or damage of the too thin cover 132 due to the impact. By limiting the thickness of the cover 132 to be less than or equal to 3 mm, it can be ensured that there is a sufficiently large noise reduction cavity 1302 in the cover 132. On the one hand, it can ensure that the volume of the noise reduction cavity 1302 matches the exhaust flow of the compression assembly 120, and on the other hand, it can avoid the turbulent noise generated by the too narrow noise reduction cavity 1302. In this way, the size of the cover 132 is optimized, the structural stability of the cover 132 is improved, and the technical effect of reducing the working noise of the cover 132 is achieved.

[0090] like Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments of the present invention, optionally, the body 110 also includes an air intake channel 1108 and an air exhaust channel 1109; the air intake channel 1108 connects the outside of the body 110 and the first cavity 1102; the air exhaust channel 1109 connects the outside of the body 110 and the second cavity 1104.

[0091] In this embodiment, the body 110 is further provided with an air inlet channel 1108 and an air outlet channel 1109, wherein one end of the air inlet channel 1108 is in communication with the first cavity 1102, and the other end of the air inlet channel 1108 is in communication with the space outside the body 110. Correspondingly, one end of the air outlet channel 1109 is in communication with the second cavity 1104, and the other end of the air outlet channel 1109 is in communication with the space outside the body 110.

[0092] During operation, the compression assembly 120 in the first cavity 1102 extracts external gas through the air inlet channel 1108, and the gas is compressed by the compression assembly 120 and discharged into the second cavity 1104 through the noise reduction component 130 and the connecting hole 1106. Finally, the high-pressure gas in the second cavity 1104 is discharged to the outside of the compressor 100 through the exhaust channel 1109 to output the high-pressure airflow to a designated area. Specifically, the air inlet channel 1108 can be connected to a gas storage structure such as a gas tank through an air inlet pipe, and the exhaust channel 1109 can be connected to a device that requires high-pressure airflow to work through an air outlet pipe.

[0093] like Figure 5 As shown, in some embodiments of the present invention, optionally, in the circumferential direction of the cover body 132, the angle between the center line of the noise reduction hole 1304 and the center line of the exhaust passage 1109 is in the range of: greater than or equal to 30° and less than or equal to 150°. Figure 5 The middle dashed line a shows the center line of the exhaust passage 1109 , and the dashed line b shows the center line of the noise reduction hole 1304 .

[0094] In this embodiment, the deflection angle between the noise reduction hole 1304 and the exhaust passage 1109 is limited. Specifically, with the cover body 132 as a reference, in the circumferential direction of the cover body 132, the angle between the center line of the noise reduction hole 1304 and the center line of the exhaust passage 1109 is α, and the angle α needs to be greater than or equal to 30° and less than or equal to 150°.

[0095] By limiting the above angle range, it is possible to ensure that there is a sufficient deflection angle between the noise reduction hole 1304 and the exhaust passage 1109, thereby preventing the high-pressure airflow ejected from the noise reduction hole 1304 from directly entering the exhaust passage 1109. In actual operation, the compression assembly 120 outputs intermittent high-pressure airflow due to the presence of the reed valve assembly 140. By limiting the deflection angle range, the stability and continuity of the airflow output from the exhaust passage 1109 can be ensured, thereby improving the practicality of the compressor 100.

[0096] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, optionally, the compression assembly 120 further includes a groove 1204 , the exhaust hole 1202 is located in the groove 1204 , and the cover body 132 covers the groove 1204 .

[0097] In this embodiment, a groove 1204 is provided on the compression assembly 120, and the exhaust hole 1202 is opened in the groove 1204. The side wall 1322 of the cover body 132 is buckled at the opening of the groove 1204, and the side wall 1322 of the cover body 132 is opposite to the bottom surface of the groove 1204. During operation, the high-pressure airflow output by the exhaust hole 1202 first flows into the groove 1204, and then flows into the second cavity 1104 through the noise reduction cavity 1302 and the noise reduction hole 1304. By providing the groove 1204, the flow path of the high-pressure airflow can be further extended in cooperation with the noise reduction cavity 1302 and the noise reduction hole 1304, thereby reducing the pneumatic noise generated by the high-pressure airflow in the compressor 100. At the same time, by providing the groove 1204, the distance between the exhaust hole 1202 and the top wall 1324 of the cover body 132 can be increased, and the impact of the high-pressure airflow on the top wall 1324 can be reduced, thereby reducing the vibration noise of the cover body 132. This can optimize the structure of the compression assembly 120, reduce the operating noise of the compressor 100, and improve the user experience.

[0098] like Figure 3 As shown, in some embodiments of the present invention, optionally, the compressor 100 further includes: a reed valve assembly 140 , which is disposed in the compression assembly 120 , and the reed valve assembly 140 is used to control the on-off state of the exhaust hole 1202 .

[0099] In this embodiment, the compressor 100 further includes a reed valve assembly 140, which is installed at the exhaust hole 1202 of the compression assembly 120. Specifically, the reed valve assembly 140 is used to control the on-off state of the exhaust hole 1202. When the air pressure at the exhaust hole 1202 reaches a predetermined pressure, the reed valve assembly 140 automatically opens the exhaust hole 1202, and the high-pressure airflow can then be discharged into the noise reduction component 130. When the pressure at the exhaust hole 1202 drops below the predetermined pressure, the reed valve assembly 140 automatically closes the exhaust hole 1202. By providing the reed valve assembly 140, the sound pressure ratio of the compression assembly 120 can be improved, and the reversal of the moving disk 124 on the compression assembly 120 caused by the air intake of the exhaust hole 1202 can be avoided, thereby improving the reliability and stability of the compressor 100.

[0100] Among them, under the action of the reed valve, the compression component 120 outputs a high-pressure pulse airflow. If the high-pressure pulse airflow directly impacts the main body 110, it will cause the main body 110 to generate a relatively obvious resonant radiation noise. For this reason, the present application sets a noise reduction component 130 to replace the main body 110 to receive the impact of the high-pressure pulse airflow, thereby effectively reducing the resonant radiation noise generated by the main body 110, thereby achieving the technical effect of reducing the working noise of the compressor 100 and improving the user experience.

[0101] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments of the present invention, optionally, the main body 110 includes: a shell 112, including an opening, and the compression assembly 120 is arranged in the shell 112; a partition 114, connected to the shell 112, the shell 112 and the partition 114 enclose a first cavity 1102, and the connecting hole 1106 is located on the partition 114; an upper cover 116, which is snapped on the opening of the shell 112, and the upper cover 116 and the partition 114 enclose a second cavity 1104.

[0102] In this embodiment, the structure of the body 110 is defined. Specifically, the body 110 includes a shell 112, a partition 114, and an upper cover 116. The shell 112 is columnar, and the top of the shell 112 is open. The compression assembly 120 is arranged in the shell 112, and the air intake channel 1108 is arranged on the shell 112, and the air intake channel 1108 communicates with the inside and outside of the shell 112. The compression assembly 120 is communicated with the air intake channel 1108, and the external gas to be compressed enters the compression assembly 120 through the air intake channel 1108.

[0103] The partition 114 is mounted on the housing 112, and the partition 114 and the housing 112 together enclose a first cavity 1102, wherein a communication hole 1106 is provided on the partition 114, and the communication hole 1106 penetrates the partition 114. The upper cover 116 is buckled on the opening at the top of the housing 112, and the exhaust passage 1109 is provided on the upper cover 116, and a second cavity 1104 is enclosed between the upper cover 116 and the partition 114, and the high-pressure airflow discharged into the second cavity 1104 through the noise reduction component 130 is finally discharged from the compressor 100 through the exhaust passage 1109.

[0104] During the assembly process, the compression assembly 120 is first installed inside the housing 112, and the noise reduction component 130 is installed on the compression assembly 120 and snapped onto the exhaust hole 1202 of the compression assembly 120. Then, the connecting hole 1106 on the partition 114 is aligned with the noise reduction component 130, and the partition 114 is pressed down so that the noise reduction component 130 passes through the partition 114, and the connection between the partition 114 and the housing 112 is completed. Finally, the upper cover 116 is snapped onto the housing 112 and the partition 114 to complete the assembly.

[0105] like Figure 2 and Figure 3 As shown, in some embodiments of the present invention, optionally, the compression assembly 120 further includes a mounting groove 1206, the mounting groove 1206 is communicated with the exhaust hole 1202, and the compressor 100 further includes: a sealing assembly 150, which is arranged in the mounting groove 1206 and surrounds the noise reduction component 130, and the sealing assembly 150 is used to seal the compression assembly 120 and the partition 114

[0106] In this embodiment, the compression assembly 120 is further provided with a mounting groove 1206, which surrounds the groove 1204 and is communicated with the exhaust hole 1202. On this basis, the compressor 100 further includes a sealing assembly 150, which is embedded in the mounting groove 1206 and surrounds the noise reduction component 130.

[0107] The sealing assembly 150 can realize an axial floating seal. Specifically, after the compression assembly 120 is opened, the installation groove 1206 connected to the exhaust hole 1202 is filled with high-pressure airflow. Under the action of the high-pressure airflow, the sealing assembly 150 is lifted up to abut against the lower surface of the partition 114, thereby sealing the gap between the compression assembly 120 and the partition 114. In this case, even if the high-pressure gas in the second cavity 1104 flows back to the first cavity 1102 through the gap between the connecting hole 1106 and the noise reduction component 130, it cannot spread outward across the sealing assembly 150, thereby ensuring that the exhaust pressure in the second cavity 1104 is up to standard and stable, reducing the leakage of high-pressure gas, and improving the working stability and reliability of the compressor 100.

[0108] like Figure 1 and Figure 3 As shown, in some embodiments of the present invention, optionally, the compression assembly 120 includes: a stator plate 122, connected to the body 110, an exhaust hole 1202 is provided on the stator plate 122, and a noise reduction component 130 is connected to the stator plate 122; a moving plate 124, provided on the stator plate 122, the moving plate 124 can move relative to the stator plate 122, and the stator plate 122 and the moving plate 124 compress the air through relative movement.

[0109] In this embodiment, the compression assembly 120 includes a static plate 122 and a dynamic plate 124. The static plate 122 is fixed in the housing, the groove 1204 and the exhaust hole 1202 are arranged on the static plate 122, and the noise reduction component 130 is fixed on the top of the static plate 122. The dynamic plate 124 is connected to the static plate 122, and the dynamic plate 124 is located on the side of the static plate 122 away from the partition 114. The dynamic plate 124 includes a flow channel connecting the inlet channel 1108 and the exhaust hole 1202. During operation, the dynamic plate 124 can achieve gas compression by moving relative to the static plate 122 to obtain a high-pressure airflow.

[0110] in, Fig. 9 The data show the effect of the noise reduction component on reducing the compressor noise.

[0111] Fig. 9 The horizontal axis corresponds to the noise value of the compressor, in db.

[0112] The vertical axis corresponds to the frequency of the noise.

[0113] Among them, each frequency value corresponds to two side-by-side columnar data, the left columnar data represents the noise value when the compressor is not equipped with noise reduction components, and the right columnar data represents the noise value when the compressor is equipped with noise reduction components.

[0114] Among them, the frequency at arrow c corresponds to the common noise frequency of the compressor. The noise reduction effect here is better and can be reduced by 7db.

[0115] It should be clarified that in the claims, specification and drawings of the present invention, the term "multiple" refers to two or more than two. Unless otherwise clearly defined, the orientation or position relationship indicated by the terms "upper" and "lower" is based on the orientation or position relationship shown in the drawings, which is only for the purpose of more conveniently describing the present invention and making the description process simpler, rather than indicating or implying that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation, so these descriptions cannot be understood as limiting the present invention; the terms "connect", "install", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, or a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or an indirect connection between multiple objects 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 of the above data.

[0116] In the claims, specification and drawings of the present invention, the description of the terms "one embodiment", "some embodiments", "specific embodiments" and the like 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 present invention. In the claims, specification and drawings of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0117] The above are only preferred embodiments of the present invention and are 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 compressor, characterized in that: include: A body, wherein the body includes a first cavity, a second cavity and a connecting hole, wherein the connecting hole connects the first cavity and the second cavity; A compression assembly is disposed in the first cavity, and the compression assembly includes an exhaust hole; A noise reduction component is connected to the compression assembly and is penetrated through the connecting hole. The noise reduction component includes a noise reduction chamber and a noise reduction hole. The noise reduction chamber is connected to the exhaust hole. The noise reduction hole is located in the second chamber, and the noise reduction hole connects the second chamber and the noise reduction chamber.

2. The compressor according to claim 1, characterized in that The noise reduction component comprises: A cover body, buckled on the outer side of the exhaust hole; The cover body comprises a top wall and side walls, the top wall and the side walls enclose the noise reduction cavity, and the noise reduction hole is arranged on the side wall.

3. The compressor according to claim 2, characterized in that The number of the noise reduction holes is 2N, where N is an integer greater than 0; The 2N noise reduction holes are symmetrically distributed on the side wall.

4. The compressor according to claim 2, characterized in that The aperture of the noise reduction hole is D1, and the aperture of the exhaust hole is D2; D1 and D2 satisfy the following relationship: 1≤2×D1 2 ÷D2 2 ≤3。 5. The compressor according to claim 2, characterized in that The outer diameter of the side wall is D3, and the diameter of the connecting hole is D4; D3 and D4 satisfy the following relationship: D4-D3≥2mm.

6. The compressor according to claim 2, characterized in that The thickness of the top wall is in the range of: greater than or equal to 1 mm and less than or equal to 3 mm; The thickness of the side wall is in the range of greater than or equal to 1 mm and less than or equal to 3 mm.

7. The compressor according to claim 2, characterized in that The body also includes an air intake passage and an exhaust passage; The air inlet passage communicates with the outside of the body and the first cavity; The exhaust passage communicates with the outside of the body and the second cavity.

8. The compressor according to claim 7, characterized in that In the circumferential direction of the cover body, the angle between the center line of the noise reduction hole and the center line of the exhaust passage is in the range of greater than or equal to 30° and less than or equal to 150°.

9. The compressor according to claim 2, characterized in that The compression assembly also includes a groove, the exhaust hole is located in the groove, and the cover body covers the groove.

10. The compressor according to claim 1, characterized in that Also includes: A reed valve assembly is provided on the compression assembly, and the reed valve assembly is used to control the on-off state of the exhaust hole.

11. The compressor according to any one of claims 1 to 10, characterized in that The body comprises: a housing including an opening, wherein the compression assembly is disposed within the housing; a partition connected to the shell, the shell and the partition enclose the first cavity, and the communicating hole is located on the partition; The upper cover is buckled on the opening of the shell, and the upper cover and the partition plate enclose the second cavity.

12. The compressor according to claim 11, characterized in that The compression assembly further includes a mounting groove, the mounting groove being in communication with the exhaust hole, and the compressor further includes: A sealing component is arranged in the mounting groove and surrounds the noise reduction component, and the sealing component is used for sealing the compression component and the partition.

13. The compressor according to any one of claims 1 to 10, characterized in that The compression component comprises: A static plate connected to the body, the exhaust hole is provided on the static plate, and the noise reduction component is connected to the static plate; The moving plate is arranged on the static plate, and the moving plate can move relative to the static plate. The static plate and the moving plate compress the air through relative movement.

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