Air outlet noise reduction ventilation structure

Abstract

An air outlet noise reduction and air exchange structure comprises an air cylinder and an air exchange box, an air cavity with an upward opening is formed in the air exchange box, a partition plate is arranged in the air cavity and divides the air cavity into a buffering bin and an air outlet bin, a through opening communicated with the buffering bin and the air outlet bin is formed in the partition plate, and a limiting block with the top end inclining downwards is arranged in the air outlet bin. An air outlet communicated with the outside is formed in the side wall of the surge bin; the air cylinder comprises an end cover used for covering the ventilation box and a cylinder body installed in the end cover, a sealing valve used for covering the opening of the air cavity is arranged at the bottom of the cylinder body, the sealing valve is provided with a movable valve plate, and the valve plate is located in the air outlet bin and corresponds to an exhaust hole for opening and closing the cylinder body; when the air cylinder exhausts air, the valve plate turns over to open the exhaust hole and then abuts against the top end of the limiting block, so that air flowing out of the exhaust hole enters the air outlet bin firstly and then enters the buffering bin through the through opening to be buffered and decelerated, it is guaranteed that the speed of the air exhausted from the air outlet tends to be stable, and air outlet noise reduction is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of air compressor technology, and in particular relates to an air outlet noise reduction and ventilation structure. Background Technology

[0002] An air compressor is a device used to compress gas. One type of air compressor is the reciprocating air compressor, which works by using the reciprocating motion of a piston to pressurize and transport gas. It is also known as a "reciprocating piston compressor" or "reciprocating compressor".

[0003] Existing piston-type air compressors suffer from high noise levels during the air exchange process due to the air exchange box. Therefore, the applicant provided an air exchange structure in invention patent application number 202310801155.4, which involves welding an end cap onto the opening of the air exchange box to form an air exchange chamber, in order to reduce noise. However, in actual use, it was found that during the air discharge process, the air exchange box directly discharges from the air outlet through the air outlet without buffering, resulting in relatively high noise levels and affecting the user experience. Therefore, it is necessary to improve it. Utility Model Content

[0004] Technical problems to be solved

[0005] This invention provides an air outlet noise reduction ventilation structure, which can reduce the noise generated when the air outlet box is ventilated, thereby improving the user experience.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A noise reduction and ventilation structure includes a cylinder and a ventilation box. The ventilation box has an upward-opening air chamber inside. The air chamber has a partition that separates the air chamber into a buffer chamber and an air outlet chamber. The partition has a passage connecting the buffer chamber and the air outlet chamber. The air outlet chamber has a limiting block with its top tilted downwards. The side wall of the buffer chamber has an air outlet that connects to the outside. The cylinder includes an end cover for covering the ventilation box and a cylinder body installed in the end cover. The bottom of the cylinder body has a sealing valve for covering the opening of the air chamber. The sealing valve is equipped with a movable valve plate. The valve plate is located in the air outlet chamber and opens and closes the exhaust port of the cylinder body accordingly.

[0009] When the cylinder exhausts gas, the valve plate flips to open the exhaust port and then abuts against the top of the limiting block, so that the gas flowing out of the exhaust port first enters the exhaust chamber, and then enters the buffer chamber through the through-hole to buffer and reduce speed, ensuring that the speed of the gas when it is discharged from the exhaust port tends to be stable and thus achieving noise reduction.

[0010] Preferably, the inlet is located below the partition and away from the vent hole to prevent gas flowing out of the vent hole from directly entering the buffer chamber.

[0011] Preferably, the air outlet and the through-hole are designed coaxially.

[0012] Preferably, the limiting block is provided with a vertically designed blocking groove that connects to the air outlet chamber, and the lower end of the blocking groove extends to the bottom of the air outlet chamber to correspond to the opening; the blocking groove is provided with multiple grooves, so that the cross-section of the limiting block is cross-shaped.

[0013] Preferably, the air chamber is further provided with a flow divider plate, which is located away from the partition plate and isolates a flow divider chamber within the air outlet chamber. The flow divider plate is provided with a flow divider port that connects the flow divider chamber and the air outlet chamber.

[0014] Preferably, the diversion port is located at the top of the diversion plate and close to the exhaust port.

[0015] Preferably, the limiting block is integrally connected to the diverter plate, and the top of the limiting block is inclined downward toward the partition plate.

[0016] Preferably, the tilt angle of the top of the limiting block is α, where 10°≤α≤35°.

[0017] (III) Beneficial Effects

[0018] This utility model provides an exhaust noise reduction and ventilation structure. By designing a partition inside the air chamber to separate a buffer chamber and an exhaust chamber, the gas flowing out of the exhaust port first enters the exhaust chamber for initial buffering, and then enters the buffer chamber through the outlet for secondary buffering. This effectively reduces the gas flow rate and ensures that the gas speed is relatively stable when it is finally discharged from the exhaust port, thereby achieving exhaust noise reduction and improving the user experience. By designing a top-tilted limiting block inside the exhaust chamber to abut and limit the range of motion of the valve plate, the valve plate is prevented from over-flipping and failing to be attracted and reset, ensuring stable operation of the structure. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 A schematic diagram of the overall structure of this utility model is shown;

[0021] Figure 2 It shows Figure 1 The main view;

[0022] Figure 3It shows Figure 2 AA section view;

[0023] Figure 4 It shows Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5 An exploded view of the overall structure of this utility model is shown;

[0025] Figure 6 It shows Figure 5 Enlarged view of point B in the middle;

[0026] Figure 7 A schematic diagram of the structure of the ventilation box of this utility model is shown;

[0027] Figure 8 It shows Figure 7 The main view;

[0028] Figure 9 It shows Figure 8 BB section view;

[0029] Figure 10 It shows Figure 8 CC section view.

[0030] In the diagram: 1 air exchange box, 10 air chamber, 11 partition, 110 port, 101 buffer chamber, 1010 air outlet, 102 air outlet chamber, 103 flow divider chamber, 12 limit block, 120 blocking groove, 13 flow divider plate, 130 flow divider port, 2 cylinder, 21 end cover, 22 cylinder body, 220 exhaust port, 23 sealing valve, 230 valve plate. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application.

[0032] See appendix Figure 1 -Appendix Figure 10A noise reduction and ventilation structure includes a ventilation box 1 and a cylinder 2. The ventilation box 1 has an upward-opening air chamber 10. The air chamber 10 has a partition 11 that separates the air chamber 10 into a buffer chamber 101 and an air outlet chamber 102. The partition 11 has a through-hole 110 that connects the buffer chamber 101 and the air outlet chamber 102. The air outlet chamber 102 has a limiting block 12 with its top tilted downwards. The side wall of the buffer chamber 101 has a connecting... The external air outlet 1010; the cylinder 2 includes an end cover 21 for covering the air exchange box 1 and a cylinder body 22 installed in the end cover 21. The bottom of the cylinder body 22 is provided with a sealing valve 23 for covering the opening of the air chamber 10. The sealing valve 23 is equipped with a movable valve plate 230. The valve plate 230 is located in the air outlet chamber 102 and corresponds to opening and closing the exhaust port 220 of the cylinder body 22. The top of the limiting block 12 is used to abut against the valve plate 230 after the exhaust port 220 is opened.

[0033] Specifically, when cylinder 2 is intake, exhaust port 220 simultaneously draws in air to adsorb valve plate 230 onto sealing valve 23 and close exhaust port 220; when cylinder 2 is exhausting, valve plate 230 flips to open exhaust port 220 and abuts against the top of limit block 12, so that the gas flowing out from exhaust port 220 first enters exhaust chamber 102, and then enters buffer chamber 101 through port 110. The gas entering buffer chamber 101 will gradually fill the buffer chamber and buffer and decelerate. The decelerated gas is finally discharged through exhaust port 1010; when cylinder 2 is intake again, it will re-adsorb valve plate 230 abutted by limit block 12 to close exhaust port 220.

[0034] Noise reduction principle: First, the design of the buffer chamber 101 increases the gas flow space, so that the high-speed airflow from the exhaust port 220 is buffered and reduced after entering the buffer chamber 101, and the airflow speed is stable, which can reduce the vibration and noise caused by the high-speed airflow impacting the surrounding air or the air exchange box 1 component; Second, the airflow entering the buffer chamber 101 through the port 110 is dispersed into multiple directions and paths, making the airflow distribution more uniform and avoiding the strong noise generated by concentrated airflow impact; In addition, the shape and internal structure of the buffer chamber 101 also cause sound waves to be reflected and interfered multiple times inside, and some sound waves cancel each other out in this process, which achieves the noise reduction effect.

[0035] In summary, this utility model separates the buffer chamber 101 and the outlet chamber 102 by designing a partition 11 inside the air chamber 10. This allows the gas flowing out from the exhaust port 220 to first enter the outlet chamber 102 for initial buffering, and then enter the buffer chamber 101 through the port 110 for secondary buffering. This effectively reduces the gas flow rate and ensures that the gas speed is relatively stable when it is finally discharged from the outlet 1010, thereby reducing noise and improving the user experience. Furthermore, by designing a top-tilted limiting block 12 inside the outlet chamber 102 to abut and limit the range of motion of the valve plate 230, the valve plate 230 is prevented from overturning and failing to be adsorbed and reset, ensuring stable operation of the structure.

[0036] It should be noted that the cylinder 2 and the air exchange box 1 mentioned in this utility model are existing products. For details, please refer to the air exchange structure mentioned in the invention patent in the background art. This utility model aims to improve the air outlet part of the existing air exchange box 1, without changing the air inlet part and other parts. Therefore, the structure and principle of the air inlet part and other parts are not described in detail in this embodiment.

[0037] See appendix Figure 4 -Appendix Figure 10 The vent 110 is located below the partition 11 and away from the vent 220.

[0038] Specifically, when the gas flows out of the exhaust port 220, it first fills the top of the exhaust chamber 102, and then gradually moves down to fill the bottom of the exhaust chamber 102, until the gas flows to the inlet 110, and then enters the buffer chamber 101 through the inlet 110. Therefore, the above structural design can prevent the gas flowing out of the exhaust port 220 from directly entering the buffer chamber 101, thereby initially buffering the gas in the exhaust chamber 102, delaying the time for the gas to enter the buffer chamber 101, and effectively reducing the gas flow rate.

[0039] See appendix Figure 4 and attached Figure 10 The air outlet 1010 and the through port 110 are coaxially designed. This design allows a small portion of the gas entering the buffer chamber 101 to be quickly discharged through the air outlet 1010. This not only prevents the buffer chamber 101 from being filled with too much gas, but also diverts the gas as it enters the buffer chamber 101, further improving the noise reduction effect.

[0040] See appendix Figure 4 -Appendix Figure 10 The limiting block 12 is provided with a vertically designed blocking groove 120 that connects to the gas outlet chamber 102, and the lower end of the blocking groove 120 extends to the bottom of the gas outlet chamber 102 to correspond to the opening 110; multiple blocking grooves 120 are provided, making the cross section of the limiting block 12 cross-shaped; this structural design can obstruct the gas entering the gas outlet chamber 102, so that the gas can effectively reduce the flow rate when passing through each blocking groove 120.

[0041] See appendix Figure 4 -Appendix Figure 10 The gas chamber 10 is also provided with a flow divider 13. The flow divider 13 is away from the partition 11 and is isolated into a flow divider chamber 103 in the gas outlet chamber 102. The flow divider 13 is provided with a flow divider port 130 connecting the flow divider chamber 103 and the gas outlet chamber 102. This design allows a small part of the gas entering the gas outlet chamber 102 to first enter the flow divider chamber 103 through the flow divider port 130, and then detour from the flow divider chamber 103 to the gas outlet chamber 102, so as to play a diversion role in the process of gas entering the gas outlet chamber 102 and further buffer the gas flow rate.

[0042] See appendix Figure 7 The diversion port 130 is located at the top of the diversion plate 13 and close to the exhaust port 220. This design allows some of the gas filling the top of the exhaust chamber 102 to be quickly diverted into the diversion chamber 103.

[0043] See appendix Figure 4 -Appendix Figure 10 The limiting block 12 is integrally connected with the diverter plate 13, and the top of the limiting block 12 is tilted downward toward the partition plate 11. This design can ensure that the gas flowing out from the exhaust port 220 can quickly enter the exhaust chamber 102 while reducing the volume of the exhaust chamber 102, making it easier to control the overall size of the air exchange box 1.

[0044] See appendix Figure 9 The tilt angle of the top of the limiting block 12 is α, 10°≤α≤35°. Within this angle, it can ensure that the exhaust port 220 can be opened smoothly, and prevent the valve plate 230 from over-rotating and failing to reset.

[0045] It should also be noted that, although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application.

Claims

1. An air outlet noise reduction ventilation structure, comprising a ventilation box (1) and an air cylinder (2), characterized in that: the ventilation box (1) is internally provided with an air cavity (10) with an upward opening, the air cavity (10) is internally provided with a partition plate (11), the partition plate (11) separates the air cavity (10) into a buffer bin (101) and an air outlet bin (102), and the partition plate (11) is provided with a through port (110) communicating the buffer bin (101) and the air outlet bin (102), the air outlet bin (102) is internally provided with a limiting block (12) inclined downward at the top end, and the buffer bin (101) is provided with an air outlet (1010) opening to the outside. The air cylinder (2) comprises an end cover (21) for covering the ventilation box (1) and a cylinder body (22) mounted in the end cover (21), the bottom of the cylinder body (22) is provided with a sealing valve (23) for covering the opening of the air cavity (10), the sealing valve (23) is mounted with a movable valve plate (230), the valve plate (230) is located in the air outlet bin (102) and corresponds to open and close the exhaust hole (220) of the cylinder body (22). Wherein, when the air cylinder (2) exhausts, the valve plate (230) turns over to open the exhaust hole (220) and abuts against the top end of the limiting block (12), so that the gas flowing out of the exhaust hole (220) first enters the air outlet bin (102), and then enters the buffer bin (101) through the through port (110) to buffer and slow down, ensuring that the speed of the gas flowing out of the air outlet (1010) tends to be stable to realize noise reduction. The through port (110) is arranged below the partition plate (11) and away from the exhaust hole (220), so as to avoid the gas flowing out of the exhaust hole (220) directly pouring into the buffer bin (101).

2. The air outlet noise reduction ventilation structure according to claim 1, characterized in that, The air outlet (1010) and the through port (110) are coaxially designed.

3. The air outlet noise reduction ventilation structure according to claim 2, characterized in that, The limiting block (12) is provided with vertical resistance grooves (120) communicating the air outlet bin (102), and the lower end of the resistance groove (120) extends to the bottom of the air outlet bin (102) to correspond to the through port (110); the resistance groove (120) is provided with a plurality of resistance grooves, and the cross section of the limiting block (12) is cross-shaped.

4. The air outlet noise reduction ventilation structure according to claim 2, characterized in that, The air cavity (10) is further provided with a flow dividing plate (13), the flow dividing plate (13) is away from the partition plate (11) and separates a flow dividing bin (103) in the air outlet bin (102), and the flow dividing plate (13) is provided with a flow dividing port (130) communicating the flow dividing bin (103) and the air outlet bin (102).

5. The air outlet noise reduction ventilation structure according to claim 1, characterized in that, The flow dividing port (130) is located at the top end of the flow dividing plate (13) and close to the exhaust hole (220).

6. The air outlet noise reduction ventilation structure according to claim 5, characterized in that, The limiting block (12) is integrally connected with the flow dividing plate (13), and the top end of the limiting block (12) is inclined downward to the partition plate (11).

7. The air outlet noise reduction ventilation structure according to claim 5, characterized in that, The inclination angle of the top end of the limiting block (12) is α, and 10°≤α≤35°.

8. The air outlet noise reduction and ventilation structure according to any one of claims 1 or 7, characterized in that, ​

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