WO2016037491A1

WO2016037491A1 - Air pump

Info

Publication number: WO2016037491A1
Application number: PCT/CN2015/079321
Authority: WO
Inventors: 董振凯
Original assignee: 厦门科际精密器材有限公司
Priority date: 2014-09-12
Filing date: 2015-05-19
Publication date: 2016-03-17
Also published as: JP2017527743A; JP6405049B2

Abstract

Disclosed is an air pump (100), comprising an upper cover (1), a valve seat (2) and a valve plate (3), wherein an air outlet (11) is formed on the upper cover (1), the valve seat (2) is arranged at the bottom of the upper cover (1), an air inlet (211) is formed on the valve seat (2); an air inlet cavity (S1) and an air outlet cavity (S2), which are in communication with each other, are defined between the valve seat (2) and the upper cover (1), the air inlet cavity (S1) being in communication with the air inlet (211), the air outlet cavity (S2) and the air outlet (11) being in communication via an exhaust passage (S4), which is defined between the upper cover (1) and the valve seat (2); and the valve plate (3) is movably arranged at the air inlet (211) so as to open and close the air inlet (211).

Description

air pump

Technical field

The present invention relates to the field of air pump equipment, and in particular to an air pump.

Background technique

Micro air pumps are widely used in medical equipment, car seats and other fields, such as sphygmomanometers, massage chairs, etc. However, the air pump in the related art is prone to noise during work and reduces the quality of the product.

Summary of the invention

The present invention aims to solve at least one of the above technical problems in the prior art to some extent.

In view of the above, the present invention needs to provide an air pump which has low operating noise.

An air pump according to the present invention includes: an upper cover, an upper air outlet is formed on the upper cover; a valve seat, the valve seat is disposed at a bottom of the upper cover, and an air inlet is formed on the valve seat, An inlet chamber and an outlet chamber communicating with each other are defined between the valve seat and the upper cover, the inlet chamber is in communication with the inlet port, and the outlet chamber and the outlet port are defined by the outlet An exhaust passage between the cover and the valve seat is in communication; and a valve plate, the valve plate being movably disposed at the air inlet to open and close the air inlet.

According to the air pump of the embodiment of the present invention, by providing an exhaust passage between the air outlet chamber and the air outlet, the operating noise of the air pump is effectively reduced, and the quality of the product is improved.

Further, the air pump according to the above embodiment of the present invention may further have the following additional technical features:

According to an example of the present invention, the valve seat is provided with an upwardly extending first exhaust pipe, the upper cover is provided with a second exhaust pipe extending downward, the first exhaust pipe and the first exhaust pipe The second exhaust pipe cooperates to define an exhaust passage, and both ends of the exhaust passage are respectively in communication with the outlet chamber and the outlet.

According to an example of the present invention, the second exhaust pipe extends into the first exhaust pipe, and an outer wall of the second exhaust pipe and an inner wall of the first exhaust pipe are spaced apart from each other to define a Exhaust passage.

According to an example of the present invention, the top of the first exhaust pipe is provided with at least one first communication hole to communicate the exhaust passage with the outlet chamber, and the bottom end of the second exhaust pipe is open and Extending in the direction of the air outlet.

According to an example of the present invention, the first communication holes are two and the two first communication holes are opposed to each other in the radial direction of the first exhaust pipe.

According to an example of the present invention, the top of the first exhaust pipe is provided with at least one first communication hole to communicate the exhaust passage with the outlet chamber, and the second exhaust pipe extends into the first One end of an exhaust pipe is a sealed end, and a peripheral wall of the second exhaust pipe is provided with at least one second communication hole to communicate the exhaust passage with the air outlet.

According to an example of the present invention, one end of the second exhaust pipe extending into the first exhaust pipe is fixed to a bottom surface of the first exhaust pipe, and the second communication hole is two and the two Two second communication holes are opposite to each other in the radial direction of the second exhaust pipe, The first communication hole and the second communication hole are staggered in a radial direction.

According to an example of the present invention, a top portion of the valve seat is formed with a downwardly recessed third air outlet groove, and the third air outlet groove and the upper cover jointly define the air outlet chamber, and the upper cover is provided There is a third exhaust pipe extending downward, and the third exhaust pipe is provided with at least one third through hole, and the air outlet is communicated with the air outlet through the third through hole.

According to an example of the present invention, a bottom portion of the upper cover is formed with an upwardly recessed fourth air outlet groove, and the fourth air outlet groove and the valve seat jointly define the air outlet chamber, and the valve seat is provided with a fourth exhaust pipe extending upwardly, wherein the fourth exhaust pipe is provided with at least one fourth through hole, and the air outlet is communicated with the air outlet through the fourth through hole.

According to an example of the present invention, the intake chamber and the outlet chamber are in communication by a communication passage defined between the upper cover and the valve seat, the communication passage extending along a curve.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

DRAWINGS

1 is an exploded view of an air pump according to an embodiment of the present invention;

Figure 2 is a perspective view of the air pump shown in Figure 1;

Figure 3 is a cross-sectional view of the air pump shown in Figure 2;

Figure 4 is a perspective view of the valve seat shown in Figure 1;

Figure 5 is a front elevational view of the valve seat shown in Figure 4;

Figure 6 is a bottom plan view of the valve seat shown in Figure 5;

Figure 7 is a perspective view of the upper cover shown in Figure 1;

Figure 8 is a front elevational view of the upper cover shown in Figure 7;

Figure 9 is a cross-sectional view taken along line A-A of Figure 8.

Reference mark:

100: air pump;

1: upper cover; 11: air outlet; 12: second air inlet; 13: second air outlet;

15: a second exhaust pipe; 151: a second hole;

2: valve seat; 21: first air inlet groove; 211: air inlet; 212: positioning hole;

22: the first air outlet;

23: a first exhaust pipe; 231: a first hole; 232: a first communication hole;

3: valve piece; 31: valve piece; 32: positioning part; 321: positioning ball;

4: partition plate; 41: inner partition portion; 411: first inner partition portion; 412: second inner partition portion;

42: outer partition portion; 421: first outer partition portion; 422: second outer partition portion;

431: intake communication port; 432: outlet connection port;

S: accommodation chamber; S1: intake chamber; S2: outlet chamber;

S3: communication channel; S31: bottom surface; S32: top surface;

S4: exhaust passage; S41: first sub-channel; S42: second sub-channel.

detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described below. Of course, they are merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in different examples. This repetition is for the purpose of simplicity and clarity, and is not in the nature of the description of the various embodiments and/or arrangements discussed. Moreover, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.

An air pump 100 according to an embodiment of the present invention will now be described with reference to Figs.

As shown in FIGS. 1-3, an air pump 100 according to an embodiment of the present invention includes an upper cover 1, a valve seat 2, and a valve plate 3.

Specifically, referring to FIG. 1 and FIG. 3, the upper cover 1 is formed with an air outlet 11, the valve seat 2 is disposed at the bottom of the upper cover 1, and the valve seat 2 is formed with an air inlet 211, and the valve seat 2 and the upper cover 1 are The intake chamber S1 and the outlet chamber S2 are defined, wherein the intake chamber S1 is in communication with the intake port 211, and the outlet chamber S2 is communicated with the outlet port 11 through the exhaust passage S4, and the intake chamber S1 and the outlet chamber S2 can pass through The communication passage S3 is communicated, and the valve plate 3 is movably provided at the intake port 211 to open and close the intake port 211.

Here, it should be noted that the "air intake port 211" is only for the intake air of the valve seat 2, and does not suggest the air intake port of the air pump 100 as a whole, and the "air outlet port 11" is only for the air outlet of the upper cover 2, Rather than suggesting the air outlet of the air pump 100 as a whole.

As shown in FIGS. 1 and 3, the upper cover 1 is adapted to be capped on the top of the valve seat 2, and the upper cover 1 and the valve seat 2 together define an intake chamber S1 and an outlet chamber S2. Further, the communication passage S3 is defined between the upper cover 1 and the valve seat 2, and a gas such as air may flow from the intake port 211 into the intake chamber S1 in the valve seat 2, and then flow into the communication passage S3 from the intake chamber S1. Then, it flows into the outlet chamber S2 from the communication passage S3, and then flows into the exhaust passage S4 from the outlet chamber S2, and finally discharges the upper cover 1 from the outlet port 11.

Therefore, in the process from entering the valve seat 2 to leaving the upper cover 1, the gas needs to sequentially flow through the intake chamber S1, the outlet chamber S2 and the exhaust passage S4, thereby prolonging the flow path of the gas and increasing the noise loss. Further, the flow noise of the gas and the overall noise of the air pump 100 are effectively reduced.

Preferably, the exhaust passage S4 and the communication passage S3 may respectively extend along a curve, so that the flow path of the gas and the flow of the gas may be further extended to further reduce the flow noise of the gas.

In addition, it should be noted that other configurations of the air pump 100 according to an embodiment of the present invention, such as an air bag (not shown) and the like, and the operation of the air pump 100 are known to those skilled in the art, and are not detailed here. description.

According to the air pump 100 of the embodiment of the present invention, by providing the exhaust passage S4 between the outlet chamber S2 and the air outlet 11, the operating noise of the air pump 100 is effectively reduced, and the quality of the product is improved.

In an embodiment of the present invention, a accommodating chamber S is defined between the valve seat 2 and the upper cover 1, and a partition 4 is disposed in the accommodating chamber S to partition the accommodating chamber S into the intake chamber S1 and the outlet chamber S2, wherein The communication passage S3 is disposed around the accommodation chamber S. Further, a first air outlet groove 22 is formed at the top of the valve seat 2, and a second air outlet groove 13 is formed at the bottom of the upper cover 1, and the first air outlet groove 22 and the second air outlet groove 13 together define an air outlet chamber S2. The contact faces of the valve seat 2 and the upper cover 1 can be connected together by ultrasonic welding technology.

In one embodiment of the present invention, referring to FIG. 3, FIG. 4 and FIG. 7, the valve seat 2 is provided with an upwardly extending first exhaust pipe 23, and the upper cover 1 is provided with a second exhaust pipe extending downward. The first exhaust pipe 23 cooperates with the second exhaust pipe 15 to define an exhaust passage S4. The two ends of the exhaust passage S4 are respectively communicated with the outlet air chamber S2 and the air outlet port 11, wherein two of the exhaust passages S4 The ends are respectively an inlet end and an outlet end, wherein the inlet end is in communication with the outlet chamber S2, the outlet end is in communication with the outlet port 11, and the gas in the outlet chamber S2 can enter the exhaust passage S4 from the inlet end of the exhaust passage S4. Then, it flows along the exhaust passage S4, and finally the upper cover 1 is discharged from the air outlet 11 through the outlet end of the exhaust passage S4.

Here, as shown in FIG. 3, the volume of the exhaust passage S4 is smaller than the volume of the outlet chamber S2. Thus, by providing the exhaust passage S4, the gas can be discharged from the larger volume outlet chamber S2 into the smaller volume exhaust passage S4 to effectively change the gas flow rate and pressure, thereby further reducing the exhaust noise. .

Further, the second exhaust pipe 15 extends into the first exhaust pipe 23, and the outer wall of the second exhaust pipe 15 and the inner wall of the first exhaust pipe 23 are spaced apart from each other to define the exhaust passage S4. Referring to FIG. 3, a first hole 231 is formed in the first exhaust pipe 23, and the first hole 231 may be a blind hole, and the first hole 231 may be vertically recessed from the top wall of the first exhaust pipe 23, The second exhaust pipe 15 is formed with a second hole 151. The second hole 151 may be a through hole or a blind hole. When the second hole 151 is a through hole, the bottom end of the second exhaust pipe 15 is open, and the second When the hole 151 is a blind hole, the bottom end of the second exhaust pipe 15 is a sealed end.

As shown in FIG. 3, when the upper cover 1 and the valve seat 2 are in position, the second exhaust pipe 15 extends downward into the first hole 231, and the diameter of the first hole 231 is larger than the outer diameter of the second exhaust pipe 15. Therefore, the outer peripheral wall of the second exhaust pipe 15 and the peripheral wall of the first hole 231 are spaced apart from each other. At this time, the exhaust passage S4 may include a first sub-channel S41 and a second sub-channel S42 that communicate with each other, the first sub-channel S41 is a gap between the second exhaust pipe 15 and the first hole 231, and the second sub-channel S42 is a second hole 151. At this time, the top open opening of the second sub-channel S42 is the air outlet 11 of the upper cover 1.

Specifically, the top of the first exhaust pipe 23 is provided with at least one first communication hole 232 for communicating the exhaust passage S4 with the outlet chamber S2. For example, in the examples of FIGS. 4-6, the first communication hole 232 penetrates the top end of the first exhaust pipe 23 in the inner and outer directions, and the first communication hole 232 may also be recessed downward from the top end of the first exhaust pipe 23. The inner end of the first communication hole 232 communicates with the first sub-channel S41, and the outer end of the first communication hole 232 communicates with the air outlet chamber S2. Thus, referring to FIG. 3, the gas in the air outlet chamber S2 can pass. The first communication hole 232 enters the first sub-channel S41.

Optionally, referring to FIG. 5, the first communication holes 232 are two and the two first communication holes 232 are opposite to each other in the radial direction of the first exhaust pipe 23, that is, the two first communication holes 232 may be in the first The circumferential direction of an exhaust pipe 23 is arranged at intervals of 180°, so that the gas in the outlet air chamber S2 can be uniformly flowed into the exhaust passage S4, and the exhaust efficiency can be improved. Of course, the present invention is not limited thereto, and the structure, the number, and the distribution position of the first communication hole 232 can also be set according to actual requirements to better meet actual requirements.

When the end of the second exhaust pipe 15 extending into the first exhaust pipe 23 is an open end, the open end extends in the direction of the air outlet 11 to communicate with the air outlet 11, and at this time, the second hole 151 is along the air outlet Direction (ie, the direction of flow of the gas, for example The up-and-down direction shown in FIG. 3 penetrates the second exhaust pipe 15, and the lower end of the second exhaust pipe 15 is spaced apart from the bottom wall of the first hole 231, and the open opening at the bottom of the second hole 151 can be It is understood to be the open end of the bottom end of the second exhaust pipe 15, the open opening at the top of the second hole 151 can be understood as the air outlet 11 of the upper cover 1, and the top end of the second hole 151 is the outlet end of the exhaust passage S4. . Thereby, the gas entering the first sub-channel S41 can enter the second sub-channel S42 through the open end of the second exhaust pipe, and then the upper cover 1 is discharged from the air outlet 11 at the top of the second sub-channel S42. Among them, the arrows shown in FIGS. 4 and 5 are used to indicate the flow direction of the gas.

When the end of the second exhaust pipe 15 extending into the first exhaust pipe 23 is a sealed end (not shown), the peripheral wall of the second exhaust pipe 15 is provided with at least one second communication hole to discharge the exhaust passage S4 is in communication with the air outlet 11. The second communication hole penetrates the peripheral wall of the bottom end of the second exhaust pipe in the inner and outer directions, so that the inner end of the second communication hole communicates with the second sub-channel S42, and the outer end of the second communication hole communicates with the first sub-channel S41. Thus, referring to FIG. 3, the gas entering the first sub-channel S41 can enter the second sub-channel S42 through the second communication hole, and then the upper cover 1 is discharged from the air outlet 11 at the top of the second sub-channel S42. Among them, the arrows shown in FIGS. 4 and 5 are used to indicate the flow direction of the gas.

The second communication holes are two and the two second communication holes are opposed to each other in the radial direction of the second exhaust pipe 15. Referring to FIG. 5, the two second communication holes may be arranged at intervals of 180° in the circumferential direction of the second exhaust pipe 15, so that the gas in the first sub-channel S41 can be uniformly flowed into the second sub-channel S42 to improve the discharge. Gas efficiency. Of course, the present invention is not limited thereto, and the structure, the number, and the distribution position of the second communication hole can also be set according to actual requirements to better meet the actual requirements.

Thus, since the first communication hole 232 is provided at the top of the first exhaust pipe 23, the second communication hole is provided at the bottom of the second exhaust pipe 15, and the tops of the first exhaust pipe 23 and the second exhaust pipe 15 Generally, the bottom ends of the first exhaust pipe 23 and the second exhaust pipe 15 are also substantially flush, so that the first communication hole 232 and the second communication hole are in the first exhaust pipe 23 or the second exhaust pipe 15 The axially staggered arrangement, preferably, the first communication hole 232 and the second communication hole 152 are staggered in the radial direction of the first exhaust pipe 23 or the second exhaust pipe 15, that is, the first communication hole The projections 232 and the second communication holes are spaced apart from each other in a plane perpendicular to the direction in which the first exhaust pipe 23 or the second exhaust pipe 15 extends (for example, the horizontal plane shown in FIG. 3), so that the exhaust passage can be further extended. The length of S4 is to effectively reduce exhaust noise.

In addition, it should be noted that when one end of the second exhaust pipe 15 extending into the first exhaust pipe 23 is a sealed end, one end of the second exhaust pipe 15 extending into the first exhaust pipe 23 may be fixed at the first end. The bottom surface of an exhaust pipe 23, for example, the lower end of the second exhaust pipe 15 may be coupled to the bottom wall of the first hole 231 by ultrasonic welding technology. Thereby, the length of the exhaust passage S4 can be lengthened, and the exhaust noise can be further reduced.

Of course, the present invention is not limited thereto, and the first exhaust pipe 23 can also extend into the second exhaust pipe 15. After reading the above technical solution, those skilled in the art can clearly understand that the first exhaust pipe 23 extends. The technical solution in the second exhaust pipe 15 will not be described in detail herein.

In an embodiment of the invention (not shown in the figure), the top of the valve seat is formed with a third downwardly recessed air outlet, and the third air outlet and the upper cover together define an air outlet, the upper cover a third exhaust pipe extending downward is disposed, the third exhaust pipe extends downward into the air outlet cavity, and the outer peripheral wall of the third exhaust pipe and the inner peripheral wall of the air outlet cavity are spaced apart from each other, and the third exhaust pipe is disposed on the third exhaust pipe A third hole extending in the up and down direction may be formed, and the third hole may be a through hole or a blind hole. When the third hole is a through hole, the top end and the bottom end of the third hole are respectively opened, and the third exhaust pipe is The lower end can be spaced apart from the bottom wall of the third air outlet, and the bottom end of the third hole can be understood as a third through hole, and the top end of the third hole can be understood as an air outlet, thereby The air chamber and the air outlet can communicate with each other through the third through hole and the third hole. When the third hole is a blind hole, the lower end of the third exhaust pipe can be fixedly connected with the bottom wall of the third air outlet, at this time, The top end of the three holes is open and the bottom end is sealed, and the third through hole can penetrate the peripheral wall of the lower end of the third exhaust pipe, and the top end of the third hole can be understood as an air outlet, and the air outlet and the air outlet can pass through the third through hole and the first through hole The three holes are connected.

In another embodiment of the present invention (not shown in the figure), the bottom of the upper cover is formed with a fourth downwardly recessed air outlet, and the fourth air outlet and the valve seat jointly define an air outlet, and the air outlet The upper cover penetrates the top wall of the upper cover and the fourth air outlet, and the valve seat is provided with a fourth exhaust pipe extending upward, and the fourth exhaust pipe extends into the air outlet cavity and the outer peripheral wall and the air outlet cavity of the fourth exhaust pipe The inner peripheral walls are spaced apart from each other, and the fourth exhaust pipe may be formed with a fourth hole extending in the up and down direction, the fourth hole being a blind hole, and the top end of the fourth hole being open, when the upper end of the fourth exhaust pipe is fourth When the top wall of the air outlet groove is spaced up and down, the top end of the fourth hole can directly communicate with the air outlet port, so that the fourth hole can function as a buffer airflow when the upper end of the fourth exhaust pipe and the top of the fourth exhaust pipe When the wall is fixedly connected, the fourth through hole may penetrate the peripheral wall of the upper end of the fourth exhaust pipe, and the outlet cavity and the outlet port may communicate through the fourth through hole and the fourth hole.

Further, referring to FIG. 3, FIG. 4 and FIG. 7, the partition plate 4 further includes an inner partition portion 41 and an outer partition portion 42, wherein the outer partition portion 42 may be connected to the inner partition portion 41, and the outer partition plate The portion 42 surrounds the outer side of the inner partition portion 41, the communication passage S3 is located outside the outer partition portion 42, the accommodation chamber S is located inside the outer partition portion 42, and the inner partition portion 41 separates the accommodation chamber S into the intake chamber S1 and an outlet chamber S2, wherein the outlet chamber S2 is located inside the inner partition portion 41, and the intake chamber S1 is located outside the inner partition portion 41.

As shown in FIG. 3, the inner partition portion 41 may be formed by vertically connecting the first inner partition portion 411 provided on the upper cover 1 and the second inner partition portion 412 provided on the valve seat 2, respectively. The partition portion 42 may be vertically butted by a first outer partition portion 421 provided on the upper cover 1 and a second outer partition portion 422 provided on the valve seat 2. In addition, it should be noted that the valve seat 2 and the upper cover 1 may have a coaxial central axis after assembly, wherein “inside” may be understood as one side toward the central axis, and the opposite side is defined as “outside”. , that is, the side away from the central axis.

Specifically, referring to FIG. 3, FIG. 4 and FIG. 7, when the upper cover 1 and the valve seat 2 are assembled in position, the bottom surface S32 of the upper cover 1 surrounding the outer edge of the accommodating chamber S and the surrounding of the valve seat 2 in the accommodating chamber S The top surface S31 of the outer edge is vertically spaced apart, so that the side walls of the partition 4 define a communication passage S3 together with the top surface S31 and the bottom surface S32, respectively.

An intake air communication port 431 and an air outlet communication port 432 are formed on the side wall of the accommodating chamber S. The intake air communication port 431 communicates the air intake chamber S1 with the communication passage S3, and the air outlet communication port 432 communicates the communication passage S3 with the air outlet chamber S2. As shown in FIGS. 4 and 5, the intake communication port 431 can penetrate the junction of the inner partition portion 41 and the outer partition portion 42, so that the gas in the intake chamber S1 can flow into the communication passage S3 through the intake communication port 431. The gas outlet communication port 432 can penetrate the outer partition portion 42 such that the gas in the communication passage S3 can enter the air outlet chamber S2 through the air outlet communication port 432.

Specifically, the top of the valve seat 2 is formed with a first intake groove 21, and the bottom of the upper cover 1 is formed with a second intake groove 12, and the first intake groove 21 and the second intake groove 12 together define an intake cavity S1. As shown in FIG. 3, FIG. 4 and FIG. 7, the first intake groove 21 is recessed downward from the upper end surface of the valve seat 2, and the second intake groove 12 is recessed upward from the lower end surface of the upper cover 1, When the upper cover 1 and the valve seat 2 are assembled in position, the first intake groove 21 and the second intake groove 12 face up and down and collectively define the intake cavity S1. At this time, the outer peripheral wall of the inner partition portion 41 can be understood. It is the peripheral wall of the intake chamber S1.

Further, the air inlet 211 is formed on the bottom wall of the first air intake groove 21, and the bottom wall of the first air intake groove 21 is formed with A positioning hole 212 spaced apart from the air inlet 211. Optionally, the air inlet 211 is a plurality of and the plurality of air inlets 211 are distributed along the circumferential direction of the positioning hole 212 . For example, in the example of FIG. 4, a positioning hole 212 is formed at the center of the bottom wall of the first intake groove 21, and the positioning hole 212 may be configured as a circular hole and penetrate the bottom wall of the first intake groove 21 in the up and down direction. Three intake ports 211 are evenly distributed in the circumferential direction of the positioning hole 212, and the three intake ports 211 also penetrate the bottom wall of the first intake groove 21 in the up and down direction, respectively.

Accordingly, referring to FIG. 1 and FIG. 3, the valve piece 3 includes a valve piece portion 31 and a positioning portion 32. The valve piece portion 31 is connected to the upper end of the positioning portion 32 and located in the intake chamber S1. The lower end of the positioning portion 32 and the positioning hole are provided. The valve portion 31 covers the air inlet 211. Specifically, the valve piece portion 31 may be generally configured as a sheet body having a circular arc surface, and the center of the valve piece portion 31 is convex toward the upper cover 1 , and the cross-sectional shape and size of the valve piece portion 31 are respectively the first The cross-sectional shape and size of the intake groove 21 are the same, so that the valve piece portion 31 can completely cover the three intake ports 211.

Further, referring to FIGS. 1 and 3, the positioning portion 32 extends vertically downward from the lower end surface of the valve piece portion 31, and the lower portion of the positioning portion 32 has a substantially spherical positioning ball 321 where the valve piece 3 is opened. When moving between the position and the closed position, only the valve piece portion 31 performs the opening and closing operations, and the positioning portion 32 is always fixed.

As shown in FIG. 3, during operation of the air pump 100, a gas such as air may enter the intake port 211 from the bottom up to open the valve piece portion 31 upward so that gas can enter the intake chamber S1. The number and shape of the air inlets 211 can also be set according to actual requirements to better meet the actual requirements. In addition, the arrows shown in FIGS. 3, 4, 5, and 9 are used to indicate the flow direction of the gas.

The intake chamber S1 may be a plurality of and the plurality of intake chambers S1 are circumferentially spaced apart. For example, in the example of FIG. 1, the upper cover 1 and the valve seat 2 together define three intake chambers S1, and the three intake chambers S1 are evenly distributed in the circumferential direction of the central axis, and each of the intake chambers S1 The structures are all the same, and at this time, the number of the inner partition portions 41 is also three, and the structures of the three inner partition portions 41 are also the same. Of course, the present invention is not limited thereto, and the structure and the number of the intake chamber S1 can also be set according to actual requirements to better meet the actual requirements.

As shown in FIG. 4 and FIG. 7 , the bottom wall of the first air inlet groove 21 is higher than the bottom wall of the first air outlet groove 22 , and the top wall of the second air inlet groove 12 is flush with the top wall of the second air outlet groove 13 . That is, the depth of the first intake groove 21 recessed downward is smaller than the depth of the first air outlet groove 22, and the depth of the second intake groove 12 is concave upwards is equal to the upward concave of the second air outlet groove 13. The depth of the intake chamber S1 in the up and down direction is smaller than the height of the outlet chamber S2 in the up and down direction, so as to ensure that the space of the outlet chamber S2 can be large, further improving the noise reduction effect.

An exhaust operation process of the air pump 100 according to an embodiment of the present invention will be briefly described below with reference to Figs.

When the air pump 100 is exhausted, the valve plate 3 covering the air inlet 211 is upwardly opened, and the gas first enters the air intake chamber S1, and then enters the curved communication passage S3 through the intake air communication port 431, and then connects the passage S3. The gas inside is discharged into the air outlet chamber S2 along the air outlet port 432, and then the gas in the air outlet chamber S2 can enter the first sub-channel S41 of the exhaust passage S4 through the first communication hole 232, and then from the first sub-channel S41. It flows to the second sub-channel S42 and is finally discharged from the air outlet 11 of the upper cover 1.

Thereby, the flow path of the gas from entering the valve seat 2 to flowing out of the upper cover 1 is long and complicated, and the gas can alternately flow in the large and small cavities, so that the flow rate and pressure of the gas can be effectively changed to achieve effective reduction. Noise effect.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "vertical", "water" Orientation or positional relationship of indications such as "flat", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or position shown in the drawings The present invention is to be construed as being limited to the invention and is not intended to limit the scope of the invention.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or integrated; can be directly connected, or indirectly connected through an intermediate medium, which can be the internal communication of two elements or the interaction of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the present invention, the first feature "on" or "under" the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.

While the embodiments of the present invention have been shown and described, the embodiments of the invention may The scope of the invention is defined by the claims and their equivalents.

Claims

An air pump, comprising:

An upper cover, an air outlet is formed on the upper cover;

a valve seat, the valve seat is disposed at a bottom of the upper cover, an air inlet is formed on the valve seat, and an air inlet chamber and an air outlet chamber that communicate with each other are defined between the valve seat and the upper cover. The intake chamber is in communication with the intake port, and the outlet chamber is communicated with the air outlet through an exhaust passage defined between the upper cover and the valve seat;

a valve plate, the valve plate being movably disposed at the air inlet to open and close the air inlet.
The air pump according to claim 1, wherein the valve seat is provided with an upwardly extending first exhaust pipe, and the upper cover is provided with a second exhaust pipe extending downward, the first An exhaust pipe cooperates with the second exhaust pipe to define an exhaust passage, and both ends of the exhaust passage are respectively in communication with the outlet chamber and the outlet.
The air pump according to claim 2, wherein said second exhaust pipe extends into said first exhaust pipe, and an outer wall of said second exhaust pipe and an inner wall of said first exhaust pipe are mutually connected They are spaced apart to define the exhaust passage.
The air pump according to claim 3, wherein a top portion of the first exhaust pipe is provided with at least one first communication hole to communicate the exhaust passage with the outlet chamber, the second exhaust The bottom end of the tube is open and extends in the direction of the air outlet.
The air pump according to claim 4, wherein said first communication holes are two and said two first communication holes are opposed to each other in a radial direction of said first exhaust pipe.
The air pump according to claim 2, wherein a top of the first exhaust pipe is provided with at least one first communication hole to communicate the exhaust passage with the outlet chamber, the second exhaust One end of the tube extending into the first exhaust pipe is a sealed end, and a peripheral wall of the second exhaust pipe is provided with at least one second communication hole to communicate the exhaust passage with the air outlet.
The air pump according to claim 6, wherein one end of the second exhaust pipe extending into the first exhaust pipe is fixed to a bottom surface of the first exhaust pipe, and the second communication hole is Two and the two second communication holes are opposite to each other in a radial direction of the second exhaust pipe, and the first communication hole and the second communication hole are alternately arranged in a radial direction.
The air pump according to claim 1, wherein a top portion of the valve seat is formed with a downwardly recessed third air outlet groove, and the third air outlet groove and the upper cover jointly define the air outlet chamber. The upper cover is provided with a third exhaust pipe extending downwardly, and the third exhaust pipe is provided with at least one third through hole, and the air outlet and the air outlet pass through the third through hole Connected.
The air pump according to claim 1, wherein a bottom portion of the upper cover is formed with an upwardly recessed fourth air outlet groove, and the fourth air outlet groove and the valve seat jointly define the air outlet chamber. The valve seat is provided with an upwardly extending fourth exhaust pipe, and the fourth exhaust pipe is provided with at least one fourth through hole, and the air outlet is communicated with the air outlet through the fourth through hole.
The air pump according to any one of claims 1 to 9, wherein the intake chamber and the outlet chamber are in communication via a communication passage defined between the upper cover and the valve seat, The communication passage extends along a curve.