Large-flow low-noise air pump

Abstract

The utility model relates to a large-flow low-noise air pump which comprises a base, a containing cavity is formed in the inner side of the base, a leather cup of the large-flow low-noise air pump is located in the middle of the containing cavity, the side wall of the base at least comprises an inner side wall and an outer side wall, a sound insulation cavity is formed between the inner side wall and the outer side wall, and the sound insulation cavity surrounds the outer side of the containing cavity. The bottom space of the leather cup in the middle of the containing cavity is communicated with the outside through the sound insulation cavity, the inner side wall and the outer side wall are arranged on the side wall of the base, so that the sound insulation cavity is formed in the outer side of the base, and at the moment, the inner side of the base is communicated with the outside through the sound insulation cavity; according to the air pump, the flowing speed of air can be slowed down through the sound insulation cavity, generated noise cannot be conducted out through the air inlet, and therefore noise is reduced, meanwhile, the sound insulation cavity can isolate noise generated when the leather cup in the base works, noise transmitted to the outer side is reduced, and the overall noise of the air pump is reduced.

Description

Technical Field

[0001] The utility model relates to the field of pumps, in particular to a large-flow and low-noise air pump. Background Art

[0002] At present, most of the existing large-flow massage lumbar support air pumps on the market have noise levels exceeding 45 decibels, and the intake airflow is relatively simple in design, with a straight-through channel, and the airflow cannot be effectively buffered and attenuated. The intake airflow is relatively rapid, and the sound of the leather cup working is emitted through the intake channel, resulting in high exhaust noise. The existing solution requires adding a silicone tube to the air inlet, which results in additional costs. Utility Model Content

[0003] Based on this, it is necessary to provide a large-flow, low-noise air pump to address the problems in the prior art.

[0004] A large-flow, low-noise air pump, characterized in that it includes a base, a accommodating cavity is provided on the inner side of the base, the leather cup is located in the middle of the accommodating cavity, the side wall of the base includes at least an inner wall and an outer wall, a soundproof cavity is formed between the inner wall and the outer wall, the soundproof cavity surrounds the outside of the accommodating cavity, and the bottom space of the leather cup in the middle of the accommodating cavity is connected to the outside through the soundproof cavity.

[0005] In one embodiment, the sound insulation cavity is provided with an air inlet hole connected to the outside, and the air inlet hole is arranged on the outer wall of the base. The sound insulation cavity is provided with a connecting hole connected to the accommodating cavity, and the connecting hole is located on the inner wall of the base. The air inlet hole and the connecting hole are respectively located on both sides of the central axis of the accommodating cavity.

[0006] In one embodiment, the air inlet hole is an air inlet column extending from the lower side of the base, and the air inlet hole is a through hole arranged in the middle of the air inlet column. There are two air inlet columns and corresponding air inlet holes, which are arranged at intervals on the lower side of the base. The two air inlet columns and the connecting hole are distributed in an isosceles triangle on the base.

[0007] In one of the embodiments, a sealing gasket is provided on the upper side or the lower side of the base for sealing the upper side or the lower side of the sound insulation cavity.

[0008] In one embodiment, the inner wall and / or outer wall of the base is provided with a plurality of protruding reinforcing ribs, and at least part of the reinforcing ribs are arranged in the sound insulation cavity to strengthen the strength of the inner wall and / or outer wall and to slow down the flow speed of the gas in the sound insulation cavity.

[0009] In one of the embodiments, the reinforcing ribs in the sound insulation cavity are alternately distributed, and the reinforcing ribs and the upper or lower side of the base are provided with steps for accommodating the sealing gasket.

[0010] In one of the embodiments, at least one annular side wall is provided between the inner side wall and the outer side wall, and a vent hole is provided on the annular side wall.

[0011] In one of the embodiments, the large-flow, low-noise air pump also includes a valve plate fixing seat, which is located on the upper side of the base. The valve plate fixing seat is provided with an air inlet valve plate corresponding to the leather cup, and an air outlet valve plate is provided on the upper side of the valve plate fixing seat. An upper cover is also provided on the upper side of the valve plate fixing seat, an air outlet hole is provided on the outer side of the upper cover, and an air outlet channel corresponding to the air outlet valve plate is provided on the inner side of the upper cover.

[0012] In one embodiment, an annular partition plate is provided on the inner side of the upper cover, and a plurality of arc-shaped protrusions are provided on the inner side of the annular partition plate. The arc-shaped protrusions and the annular partition plate form an air outlet groove corresponding to the air outlet valve plate. An extension protrusion is provided on the outer end of the arc-shaped protrusion. The extension protrusion extends to the outside of the adjacent arc-shaped protrusions. The extension protrusion and the annular partition plate form an extension channel. A cross-shaped channel is formed between the plurality of arc-shaped protrusions and the extension protrusions. The air outlet of the upper cover extends to the middle position of the cross-shaped channel on the inner side of the upper cover, and a matching sound-absorbing cotton is provided in the cross-shaped channel.

[0013] In one of the embodiments, the large-flow, low-noise air pump also includes a motor, the motor is provided with a casing, an EMC filter board is provided in the casing, the EMC filter board is fixed inside the casing, the casing is provided with a hole groove, and the EMC filter board is connected to the outside world through the hole groove position.

[0014] The above-mentioned large-flow, low-noise air pump forms a soundproof cavity on the outside of the base by setting an inner wall and an outer wall on the side wall of the base. At this time, the inside of the base is connected with the outside through the soundproof cavity. When the gas flows between the inside and the outside of the base, the flow speed of the gas can be slowed down through the soundproof cavity, and the noise generated will not be transmitted through the air inlet, thereby reducing the noise. At the same time, the soundproof cavity can also isolate the noise of the leather bowl inside the base when it is working, reduce the noise transmitted to the outside, and thus reduce the overall noise of the air pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model large flow and low noise air pump;

[0016] Figure 2 This is a schematic diagram of the exploded structure of the utility model large flow and low noise air pump;

[0017] Figure 3 This is a partial cross-sectional structural diagram of the base of the utility model high-flow and low-noise air pump;

[0018] Figure 4 This is a schematic diagram of the gas flow structure of the utility model large flow and low noise air pump base;

[0019] Figure 5 This is a schematic diagram of the upper cover and silencer cotton of the utility model with large flow and low noise;

[0020] Figure 6 This is a schematic diagram of the structure of a large flow and low noise air pump motor of the utility model;

[0021] Figure 7 This is a schematic diagram of the exploded structure of the utility model large flow and low noise air pump motor;

[0022] Among them, 1. base; 2. accommodating cavity; 21. sound insulation cavity; 11. inner wall; 12. outer wall; 13. air inlet; 14. connecting hole; 15. air inlet column; 16. sealing gasket; 17. reinforcing rib; 3. valve plate fixing seat; 4. air inlet valve plate; 5. air outlet valve plate; 6. upper cover; 7. air outlet; 71. annular partition plate; 72. arc-shaped protrusion; 73. air outlet groove; 74. extended protrusion; 75. extended channel; 76. cross-shaped channel; 77. sound-absorbing cotton; 8. motor; 81. housing; 82. EMC filter board; 9. leather bowl. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only."

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] like Figures 1 to 7 As shown, a large-flow, low-noise air pump is characterized in that it includes a base 1, a accommodating chamber 2 is provided on the inner side of the base 1, the leather cup 9 is located in the middle of the accommodating chamber 2, and the side wall of the base 1 includes at least an inner wall 11 and an outer wall 12, a soundproofing chamber 21 is formed between the inner wall 11 and the outer wall 12, and the soundproofing chamber 21 surrounds the outside of the accommodating chamber 2, and the bottom space of the leather cup 9 in the middle of the accommodating chamber 2 is connected with the outside through the soundproofing chamber 21.

[0027] An inner wall 11 and an outer wall 12 are provided on the side wall of the base 1, so as to form a soundproof cavity 21 on the outside of the base 1. At this time, the inside of the base 1 is connected with the outside through the soundproof cavity 21, so that when gas flows between the inside and the outside of the base 1, the flow speed of the gas can be slowed down through the soundproof cavity 21, thereby reducing noise. At the same time, the soundproof cavity 21 can also isolate the noise of the leather cup 9 inside the base 1 when it is working, reduce the noise transmitted to the outside, and thus reduce the overall noise of the air pump.

[0028] During the operation of the leather cup 9, the space at the bottom of the leather cup 9 is always changing due to the need to deform. The gas flow in the accommodating chamber 2 at the bottom of the leather cup 9 is relatively frequent. At this time, in order to connect the accommodating chamber 2 with the outside, the soundproof chamber 21 is provided with an air inlet 13 connected with the outside. The air inlet 13 is arranged at the outer wall 12 of the base 1. The soundproof chamber 21 is provided with a connecting hole 14 connected with the accommodating chamber 2. The connecting hole 14 is located at the inner wall 11 of the base 1. The air inlet 13 and the connecting hole 14 are respectively located on both sides of the central axis of the accommodating chamber 2. The air inlet 13 is arranged at the outer wall 12, and the connecting hole 14 is arranged at the inner wall 11, so that the accommodating chamber 2 is connected with the outside through the soundproof chamber 21, and the gas flow between the accommodating chamber 2 and the outside is realized.

[0029] As for the air inlet 13, in order to reduce the impact sound generated during the air intake process, in this embodiment, the air inlet 13 is an air inlet column 15 extending from the lower side of the base 1, and the air inlet 13 is a through hole set in the middle of the air inlet column 15. There are two air inlet columns 15 and corresponding air inlet holes 13, which are arranged at intervals on the lower side of the base 1. The two air inlet columns 15 and the connecting hole 14 are distributed in the form of an isosceles triangle on the base 1. The two air inlet columns 15 and the corresponding two air inlet holes 13 can disperse the air intake. Compared with one air inlet hole 13, the air intake amount at the position of the air inlet hole 13 can be reduced, thereby reducing the impact sound generated during the air intake process. At the same time, in order to extend the flow path of the gas in the soundproof cavity 21, the two air inlet columns 15 and the connecting hole 14 are distributed in the form of an isosceles triangle on the base 1, specifically, the two air inlet columns 15 are arranged on one side of the base 1, and the connecting hole 14 is arranged on the other side opposite to the air inlet column 15, and is located in the middle of the side of the base 1. This In this way, the distances between the two air inlet columns 15 and the connecting hole 14 are the same. At the same time, the gas entering the sound insulation cavity 21 through the air inlet columns 15 passes through at least one side path of the base 1 and then enters the accommodating cavity 2 through the connecting hole 14, thereby extending the path of the gas in the sound insulation cavity 21. As a result, a buffer attenuation zone is formed at the position of the sound insulation cavity 21 during the process of the gas entering the accommodating cavity 2. The noise generated when the leather cup 9 is working enters the surrounding buffer attenuation zone (sound insulation cavity 21) through the connecting hole 14, buffering and attenuating the noise so that the noise will not be transmitted through the air inlet, thereby achieving the purpose of noise reduction.

[0030] The soundproof cavity 21 is formed between the inner wall 11 and the outer wall 12. For the convenience of production, an opening is formed on the upper or lower side of the soundproof cavity 21. Therefore, after being assembled into an air pump, the soundproof cavity 21 needs to be sealed to a certain extent. Specifically, in this example, a sealing gasket 16 is provided on the upper or lower side of the base 1 to seal the upper or lower side of the soundproof cavity 21. Specifically, at this time, the upper side of the base 1 is an opening. Therefore, a sealing gasket 16 is provided at the upper side of the base 1, which can be used to seal the accommodating cavity 2 of the base 1 at the opening position, thereby preventing noise from being transmitted from the opening position. At this time, the sealing gasket 16 is not only used for sealing the sound insulation cavity 21, but also can be used for sealing and noise reduction between the base 1 and adjacent components. For example, when the upper cover 6 on the upper side of the base 1 (a positioning step is provided on the inner side of the upper side of the base 1, and the leather cup 9 is positioned with the base 1 through the positioning step) or the leather cup 9 fixing seat (the leather cup 9 fixing seat is provided with a positioning step, and the leather cup 9 is positioned through the positioning step of the leather cup 9 base 1) is pressed down, the sealing gasket 16 can be used to achieve the sealing between the base 1 and the upper cover 6, thereby achieving the sealing between the top of the leather cup 9 and the upper cover 6.

[0031] At this time, the height of the base 1 is adapted to the height of the leather cup 9, that is, the leather cup 9 is entirely arranged on the inner side of the base 1, and a positioning step for positioning the leather cup 9 is provided on the upper side of the base 1, and the upper cover 6 is arranged on the upper side of the base 1 (with a valve plate fixing seat 3 and an outlet valve plate 5 provided in between). In this way, the sound insulation cavity 21 of the base 1 can completely surround the leather cup 9, thereby reducing the noise transmitted by the leather cup 9 during operation. Of course, a leather cup fixing seat can also be provided on the upper side of the base 1, and the lower side of the leather cup fixing seat is sealed with the base 1 through a sealing ring, and the upper cover 6 is arranged on the upper side of the leather cup fixing seat (with a valve plate fixing seat 3 and an outlet valve plate 5 provided in between), thereby forming a complete pump body structure.

[0032] Since the inner wall 11 and the outer wall 12 of the base 1 have a certain height, in order to ensure the strength of the inner wall 11 and the outer wall 12, in this embodiment, the inner wall 11 and / or the outer wall 12 of the base 1 are provided with a plurality of protruding reinforcing ribs 17, and at least part of the reinforcing ribs 17 are arranged in the soundproof cavity 21, for reinforcing the strength of the inner wall 11 and / or the outer wall 12, and for slowing down the flow speed of the gas in the soundproof cavity 21. At this time, reinforcing ribs 17 are arranged in at least part of the soundproof cavity 21, so that the flow speed of the gas in the soundproof wall can be slowed down while improving the strength of the inner wall 11 and the outer wall 12, thereby increasing the sound insulation effect of the soundproof wall and reducing the noise of the pump.

[0033] For the reinforcing ribs 17 provided in the soundproof cavity 21, it is necessary to ensure that the reinforcing ribs 17 cannot seal the cavity of the soundproof cavity 21. Therefore, in this embodiment, the reinforcing ribs 17 in the soundproof cavity 21 are alternately distributed, so that there is a gap between the reinforcing ribs 17 and the inner wall 11 or the outer wall 12 for the flow of gas. At the same time, the reinforcing ribs 17 can also be set as triangles, which can improve the strength of the inner wall 11 and the outer wall 12 while forming other flow spaces. Of course, in order to facilitate the positioning of the sealing gasket 16 at the upper side of the soundproof cavity 21, the sealing gasket 16 needs to be positioned. Therefore, the reinforcing ribs 17 and the upper or lower side of the base 1 are provided with a step for accommodating the sealing gasket 16, and a step is provided at the position where the sealing gasket 16 is to be in contact. At this time, the step is a top surface of the reinforcing ribs 17 lower than the upper side of the base 1, and / or the upper side of the base 1 is set to a specific shape (such as a circular or arc-shaped structure), so as to achieve the upper and lower positioning of the sealing gasket 16, and at the same time, the sealing gasket 16 can be prevented from rotating and shifting during use or installation.

[0034] In order to increase the noise reduction effect of the accommodating chamber 2, in the present embodiment, at least one annular side wall is further provided between the inner wall 11 and the outer wall 12, and a vent hole is provided on the annular side wall. By providing the annular side wall, specifically, providing an annular side wall at this time, the exchange path between the accommodating chamber 2 and other external environments can be increased, the gas flow rate can be slowed down, thereby reducing the noise caused by gas impact, and at the same time, the noise inside the accommodating chamber 2 can be further isolated, thereby reducing the overall noise of the pump body.

[0035] As for the pump body, in order to realize the normal operation of the pump body, in the present embodiment, the large-flow and low-noise air pump also includes a valve plate fixing seat 3, and the valve plate fixing seat 3 is located on the upper side of the base 1. The valve plate fixing seat 3 is provided with an air intake valve plate 4 corresponding to the leather cup 9, and an air outlet valve plate 5 is provided on the upper side of the valve plate fixing seat 3. An upper cover 6 is also provided on the upper side of the valve plate fixing seat 3, and an air outlet hole 7 is provided on the outer side of the upper cover 6, and an air outlet channel corresponding to the air outlet valve plate 5 is provided on the inner side of the upper cover 6.

[0036] At the same time Figure 5 As shown, in order to reduce the noise generated at the position of the upper cover 6 after the pump body is compressed, in the present embodiment, an annular partition plate 71 is provided on the inner side of the upper cover 6, and a plurality of arc-shaped protrusions 72 are provided on the inner side of the annular partition plate 71, and the arc-shaped protrusions 72 and the annular partition plate 71 form an air outlet groove 73 corresponding to the air outlet valve plate 5, and an extension protrusion 74 is provided on the outer end of the arc-shaped protrusion 72, and the extension protrusion 74 extends to the outer side of the adjacent arc-shaped protrusion 72, and the extension protrusion 74 and the annular partition plate 71 form an extension channel 75, and a cross-shaped channel 76 is formed between the plurality of the arc-shaped protrusions 72 and the extension protrusions 74, and the air outlet hole 7 of the upper cover 6 extends to the middle position of the cross-shaped channel 76 on the inner side of the upper cover 6, and a matching sound-absorbing cotton 77 is provided in the cross-shaped channel 76.

[0037] like Figure 6 He Ru Figure 7 As shown, when the pump body is used in automobiles and other applications where filtering is required, it is necessary to add an EMC filter board 82 to the motor 8 of the pump body. In this embodiment, the large-flow, low-noise air pump also includes a motor 8, and the motor 8 is provided with a housing 81, and an EMC filter board 82 is provided in the housing 81. The EMC filter board 82 is fixed inside the housing 81, and the housing 81 is provided with a hole groove. The EMC filter board 82 is connected to the external wiring harness through the hole groove position.

[0038] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A high-flow, low-noise air pump, characterized in that: It includes a base, a accommodating cavity is arranged on the inner side of the base, the leather cup of the large-flow and low-noise air pump is located in the middle of the accommodating cavity, the side wall of the base includes at least an inner wall and an outer wall, a soundproof cavity is formed between the inner wall and the outer wall, the soundproof cavity surrounds the outside of the accommodating cavity, and the bottom space of the leather cup in the middle of the accommodating cavity is connected with the outside through the soundproof cavity.

2. The high-flow, low-noise air pump according to claim 1, characterized in that: The sound insulation cavity is provided with an air inlet hole connected to the outside, and the air inlet hole is arranged on the outer wall of the base. The sound insulation cavity is provided with a connecting hole connected to the accommodating cavity, and the connecting hole is located on the inner wall of the base. The air inlet hole and the connecting hole are respectively located on both sides of the central axis of the accommodating cavity.

3. The high-flow, low-noise air pump according to claim 2, characterized in that: The air inlet hole is an air inlet column extending from the lower side of the base, and the air inlet hole is a through hole arranged in the middle of the air inlet column. There are two air inlet columns and corresponding air inlet holes, which are arranged at intervals on the lower side of the base. The two air inlet columns and the connecting hole are distributed in an isosceles triangle on the base.

4. The high-flow, low-noise air pump according to any one of claims 1 to 3, characterized in that: A sealing gasket is provided on the upper side or the lower side of the base for sealing the upper side or the lower side of the sound insulation cavity.

5. The high-flow, low-noise air pump according to claim 4, characterized in that: The inner wall and / or outer wall of the base are provided with a plurality of protruding reinforcing ribs, and at least part of the reinforcing ribs are arranged in the sound insulation cavity to strengthen the strength of the inner wall and / or outer wall and to slow down the flow speed of the gas in the sound insulation cavity.

6. The high-flow, low-noise air pump according to claim 5, characterized in that: The reinforcing ribs in the sound insulation cavity are alternately distributed, and steps for accommodating sealing pads are provided between the reinforcing ribs and the upper side or the lower side of the base.

7. The high-flow, low-noise air pump according to claim 4, characterized in that: At least one annular side wall is provided between the inner side wall and the outer side wall, and a vent hole is provided on the annular side wall.

8. The high-flow, low-noise air pump according to claim 4, characterized in that: The large-flow, low-noise air pump also includes 3 valve plate fixing seats, which are located on the upper side of the base. The valve plate fixing seat is provided with an air inlet valve plate corresponding to the leather cup, and the upper side of the valve plate fixing seat is provided with an air outlet valve plate. The upper side of the valve plate fixing seat is also provided with an upper cover, and the outer side of the upper cover is provided with an air outlet hole, and the inner side of the upper cover is provided with an air outlet channel corresponding to the air outlet valve plate.

9. The high-flow, low-noise air pump according to claim 8, characterized in that: An annular partition plate is provided on the inner side of the upper cover, and a plurality of arc-shaped protrusions are provided on the inner side of the annular partition plate. The arc-shaped protrusions and the annular partition plate form an air outlet groove corresponding to the air outlet valve plate. An extension protrusion is provided on the outer end of the arc-shaped protrusion, and the extension protrusion extends to the outside of the adjacent arc-shaped protrusion. The extension protrusion and the annular partition plate form an extension channel, and a cross-shaped channel is formed between the plurality of the arc-shaped protrusions and the extension protrusions. The air outlet of the upper cover extends to the middle position of the cross-shaped channel on the inner side of the upper cover, and a matching sound-absorbing cotton is provided in the cross-shaped channel.

10. The high-flow, low-noise air pump according to claim 4, characterized in that: The large-flow, low-noise air pump also includes a motor, the motor is provided with a casing, an EMC filter board is provided in the casing, the EMC filter board is fixed inside the casing, the casing is provided with holes and slots, and the EMC filter board is connected to the outside world through the hole and slot positions.

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