CN105464935B - Air pump - Google Patents

Abstract

The invention discloses a kind of air pump, the air pump includes：Upper cover, valve seat and valve block, formed with gas outlet on upper lid, valve seat is located at the bottom of upper cover, formed with air inlet on valve seat, inlet chamber and outlet chamber are limited between valve seat and upper cover, inlet chamber is connected with air inlet, and outlet chamber is connected with gas outlet, inlet chamber is connected with outlet chamber by communicating passage, and valve block is movably arranged at air inlet and sentences opening and closing air inlet.Air pump according to the present invention, by setting communicating passage between inlet chamber and outlet chamber, so as to significantly reduce the operating noise of air pump, improves the quality of product.

Description

Air pump

Technical field

The present invention relates to air pump apparatus field, more particularly, to a kind of air pump.

Background technology

Micro air pump is widely used in the fields such as medical instrument, automotive seat, such as sphygmomanometer, massage armchair etc., however, phase Air pump in the technology of pass easily produces noise during the work time, reduces the quality of product.

The content of the invention

It is contemplated that at least solve one of technical problem existing in the prior art.For this reason, the invention reside in propose one Kind air pump, the operating noise of the air pump are low.

Air pump according to embodiments of the present invention, including：Upper cover, formed with gas outlet on the upper lid；Valve seat, the valve seat It is located at the bottom of the upper cover, formed with air inlet on the valve seat, inlet chamber is limited between the valve seat and the upper cover And outlet chamber, the inlet chamber are connected with the air inlet, the outlet chamber is connected with the gas outlet, the inlet chamber and institute Outlet chamber is stated to connect by the communicating passage being limited between the upper cover and the valve seat；And valve block, the valve block are removable The air inlet is located at dynamicly sentences the opening and closing air inlet.

Air pump according to embodiments of the present invention, by setting communicating passage between inlet chamber and outlet chamber, so that effectively Ground reduces the operating noise of air pump, improves the quality of product.

Specifically, limit accommodating chamber between the valve seat and the upper cover, partition plate is equipped with the accommodating chamber with by institute State accommodating chamber and be separated into the inlet chamber and the outlet chamber, wherein the communicating passage is set around the accommodating chamber.

Alternatively, the communicating passage extends along curve.

Further, the top of the valve seat is formed with the first air inlet duct, and the bottom of the upper cover is formed with the second air inlet Groove, first air inlet duct limit the inlet chamber jointly with second air inlet duct.

Specifically, the air inlet is formed on the bottom wall of first air inlet duct, on the bottom wall of first air inlet duct Formed with the location hole being spaced apart with the air inlet, the valve block includes valve block portion and location division, and the valve block portion is connected to The upper end of the location division and in the inlet chamber, the lower end of the location division coordinates with the location hole, the valve block Portion is covered on the air inlet.

Alternatively, the air inlet is circumferentially-spaced distribution of the multiple and the multiple air inlet along the location hole.

Further, the top of the valve seat is formed formed with the first outgassing groove being downwardly concaved, the bottom of the upper cover There is the second upwardly recessed outgassing groove, first outgassing groove limits the outlet chamber jointly with second outgassing groove.

Specifically, the bottom wall of first air inlet duct is higher than the bottom wall of first outgassing groove, second air inlet duct Roof is concordant with the roof of second outgassing groove.

Further, formed with air inlet connected entrance and outlet connected entrance, the air inlet connection on the side wall of the accommodating chamber Mouth connects the inlet chamber with the communicating passage, and the outlet connected entrance connects the communicating passage and the outlet chamber It is logical.

Alternatively, the inlet chamber is the multiple and the multiple circumferentially spaced distribution of inlet chamber.

Specifically, the valve seat is equipped with the downtake pipe that upwardly extends, and the upper lid is equipped with the extended downwardly Two exhaust pipes, the downtake pipe and the second exhaust pipe coordinate to limit exhaust passage, and the two of the exhaust passage End is connected with the outlet chamber and the gas outlet respectively.

Further, the second exhaust pipe is stretched into the downtake pipe, the outer wall of the second exhaust pipe and institute The inner wall for stating downtake pipe is spaced apart from each other to limit the exhaust passage.

Specifically, the top of the downtake pipe is equipped with least one first intercommunicating pore with by the exhaust passage and institute State outlet chamber connection, the open bottom end of the second exhaust pipe and along the gas outlet direction extend..

Alternatively, the intercommunicating pore for two and described two intercommunicating pores along the downtake pipe diametrically.

Alternatively, the top of the downtake pipe is equipped with least one first intercommunicating pore with by the exhaust passage and institute Outlet chamber connection is stated, one end that the second exhaust pipe stretches into the downtake pipe is sealed end, the second exhaust pipe Perisporium is equipped with least one second intercommunicating pore so that the exhaust passage to be connected with the gas outlet.

Alternatively, the second exhaust pipe stretches into one end of the downtake pipe and is fixed on the bottom of the downtake pipe Face, second intercommunicating pore for two and described two second intercommunicating pores along the second exhaust pipe diametrically, described the One intercommunicating pore is staggered with the second intercommunicating pore radial direction.

The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description Obtain substantially, or recognized by the practice of the present invention.

Brief description of the drawings

Fig. 1 is the explosive view of air pump according to embodiments of the present invention；

Fig. 2 is the stereogram of the air pump shown in Fig. 1；

Fig. 3 is the profile of the air pump shown in Fig. 2；

Fig. 4 is the stereogram of the valve seat shown in Fig. 1；

Fig. 5 is the front view of the valve seat shown in Fig. 4；

Fig. 6 is the bottom view of the valve seat shown in Fig. 5；

Fig. 7 is the stereogram of the upper cover shown in Fig. 1；

Fig. 8 is the front view of the upper cover shown in Fig. 7；

Fig. 9 is the profile of the line A-A along Fig. 8.

Reference numeral：

100：Air pump；

1：Upper cover；11：Gas outlet；12：Second air inlet duct；13：Second outgassing groove；

15：Second exhaust pipe；151：Second hole；

2：Valve seat；21：First air inlet duct；211：Air inlet；212：Location hole；

22：First outgassing groove；

23：Downtake pipe；231：First hole；232：First intercommunicating pore；

3：Valve block；31：Valve block portion；32：Location division；321：Position ball；

4：Partition plate；41：Internal partition portion；411：First internal partition portion；412：Second internal partition portion；

42：External partition portion；421：First external partition portion；422：Second external partition portion；

431：Air inlet connected entrance；432：Outlet connected entrance；

S：Accommodating chamber；S1：Inlet chamber；S2：Outlet chamber；

S3：Communicating passage；S31：Bottom surface；S32：Top surface；

S4：Exhaust passage；S41：First subchannel；S42：Second subchannel.

Embodiment

The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end Same or similar label represents same or similar element or has the function of same or like element.Below with reference to attached The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.

Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.For letter Change disclosure of the invention, hereinafter the component and setting of specific examples are described.Certainly, they are merely examples, and It is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or letter.It is this heavy It is the relation between itself not indicating discussed various embodiments and/or setting for purposes of simplicity and clarity again.This Outside, the present invention provides various specific techniques and material examples, but those of ordinary skill in the art may realize that The applicable property of other techniques and/or the use of other materials.

Apply the air pump 100 of example according to the present invention below with reference to Fig. 1-Fig. 9 descriptions.

As shown in Figure 1-Figure 3, air pump 100 according to embodiments of the present invention, including：Upper cover 1, valve seat 2 and valve block 3.

Specifically, with reference to Fig. 1 and Fig. 3, formed with gas outlet 11 in upper cover 1, valve seat 2 is located at the bottom of upper cover 1, valve seat 2 On formed with air inlet 211, inlet chamber S1 and outlet chamber S2 are limited between valve seat 2 and upper cover 1, wherein, inlet chamber S1 with into Gas port 211 connects, and outlet chamber S2 is connected with gas outlet 11, and inlet chamber S1 is connected with outlet chamber S2 by communicating passage S3, valve block 3 It is movably arranged at air inlet 211 and sentences opening and closing air inlet 211.

Here, it is necessary to which explanation, " for air inlet 211 " is only for the air inlet of valve seat 2, rather than implies that air pump 100 is whole The air inlet of body, " for gas outlet 11 " is only for the outlet of upper cover 2, rather than implies the overall gas outlet of air pump 100.

As shown in figures 1 and 3, upper cover 1 is suitable for covering limits air inlet jointly in the top of valve seat 2, upper cover 1 with valve seat 2 Chamber S1, outlet chamber S2.In addition, communicating passage S3 is limited between upper cover 1 and valve seat 2, gas such as air can be from air inlet 211 flow into the inlet chamber S1 in valve seat 2, are then flowed into from inlet chamber S1 in communicating passage S3, are then flowed from communicating passage S3 Enter in outlet chamber S2, finally discharge upper cover 1 from gas outlet 11.

Thus, gas from enter valve seat 2 to during leaving upper cover 1, it is necessary to sequentially flow through inlet chamber S1, communicating passage S3 and outlet chamber S2, so as to extend and complicate the flow path of gas, adds noise losses, and then significantly reduce The flow noise of gas and the overall noise of air pump 100.Preferably, communicating passage S3 can extend along curve, so as into One step extends and complicates the flow path of gas, further reduces the flow noise of gas.

Air pump 100 according to embodiments of the present invention, by setting communicating passage S3 between inlet chamber S1 and outlet chamber S2, So as to significantly reduce the operating noise of air pump 100, the quality of product is improved.

In addition, it is necessary to explanation, other compositions such as air bag of air pump 100 according to embodiments of the present invention are (not shown Go out) etc. and the operation of air pump 100 be all for those of ordinary skills known, be not detailed herein.

In one embodiment of the invention, limit accommodating chamber S between valve seat 2 and upper cover 1, be equipped with accommodating chamber S every Accommodating chamber S is separated into inlet chamber S1 and outlet chamber S2, wherein communicating passage S3 is set plate 4 around accommodating chamber S.Further Ground, the top of valve seat 2 formed with the first outgassing groove 22, the bottom of upper cover 1 formed with the second outgassing groove 13, the first outgassing groove 22 with Second outgassing groove 13 limits outlet chamber S2 jointly.Wherein, valve seat 2 and the contact surface of upper cover 1 can pass through ultrasonic welding skill Art links together.

Further, internal partition portion 41 and external partition portion 42 are further comprised with reference to Fig. 3, Fig. 4 and Fig. 7, partition plate 4, wherein, External partition portion 42 can be connected with internal partition portion 41, and external partition portion 42 is looped around the outside in internal partition portion 41, communicating passage S3 Positioned at the outside in external partition portion 42, accommodating chamber S is located at the inner side in external partition portion 42, internal partition portion 41 by accommodating chamber S be separated into Air cavity S1 and outlet chamber S2, wherein outlet chamber S2 are located at the inner side in internal partition portion 41, and inlet chamber S1 is located at the outer of internal partition portion 41 Side.

Wherein, as shown in figure 3, internal partition portion 41 by the first internal partition portion 411 for being located in upper cover 1 and can be located at valve seat The second internal partition portion on 2 is docked about 412 to be formed, and external partition portion 42 can be by the first external partition portion 421 for being located in upper cover 1 Dock and form about 422 with the second external partition portion being located on valve seat 2.In addition, it is necessary to explanation, valve seat 2 are assembled with upper cover 1 There can be coaxial central axis afterwards, wherein, " inner side " can be understood as the side towards central axis, its opposite side It is defined as in " outside ", i.e. the side away from central axis.

Specifically, with reference to Fig. 3, Fig. 4 and Fig. 7, after upper cover 1 is assembled in place with valve seat 2, upper cover 1 is looped around accommodating chamber S The bottom surface S32 of outer rim, be spaced apart with the top surface S31 for being looped around accommodating chamber S outer rims of valve seat 2 up and down, so that the side wall of partition plate 4 divides Communicating passage S3 is not limited jointly with top surface S31, bottom surface S32.

Formed with air inlet connected entrance 431 and outlet connected entrance 432 on the side wall of accommodating chamber S, air inlet connected entrance 431 is by air inlet Chamber S1 is connected with communicating passage S3, and outlet connected entrance 432 connects communicating passage S3 with outlet chamber S2.As shown in Figure 4 and Figure 5, Air inlet connected entrance 431 can run through the junction in internal partition portion 41 and external partition portion 42, so that the gas in inlet chamber S1 can be with Flowed into by air inlet connected entrance 431 in communicating passage S3, outlet connected entrance 432 can run through external partition portion 42, so as to connect logical Gas in road S3 can be entered in outlet chamber S2 by outlet connected entrance 432.

Specifically, the top of valve seat 2 is formed with the first air inlet duct 21, and the bottom of upper cover 1 is formed with the second air inlet duct 12, and One air inlet duct 21 and the second air inlet duct 12 limit inlet chamber S1 jointly.As shown in Fig. 3, Fig. 4 and Fig. 7, the first air inlet duct 21 from The upper surface of valve seat 2, which is downwardly concaved, to be formed, and the second air inlet duct 12 is formed from the lower face of upper cover 1 is upwardly recessed, when upper cover 1 and valve After the assembling in place of seat 2, the first air inlet duct 21 and the second air inlet duct face and limit inlet chamber S1 jointly about 12, at this time, interior The periphery wall of partition board portion 41 can be understood as the perisporium of inlet chamber S1.

Further, air inlet 211 is formed on the bottom wall of the first air inlet duct 21, is formed on the bottom wall of the first air inlet duct 21 There is the location hole 212 being spaced apart with air inlet 211.Alternatively, air inlet 211 is multiple and multiple air inlets 211 along location hole 212 circumferentially-spaced distribution.Such as in the example of fig. 4, formed with a positioning at the center of the bottom wall of the first air inlet duct 21 Hole 212, location hole 212 can be structured as circular hole, and run through the bottom wall of the first air inlet duct 21 along the vertical direction, location hole 212 Three air inlets 211 are evenly distributed in circumferential direction, three air inlets 211 also run through the first air inlet duct 21 along the vertical direction respectively Bottom wall.

Correspondingly, valve block portion 31 and location division 32 are included with reference to Fig. 1 and Fig. 3, valve block 3, valve block portion 31 is connected to location division 32 upper end and in the inlet chamber S1, lower end and the location hole 212 of location division 32 coordinate, and valve block portion 31 is covered in air inlet On 211.Specifically, valve block portion 31 can be constructed generally as the sheet body with arc surface, and the centrally directed upper cover 1 in valve block portion 31 Direction protrusion, and the shape of cross section in valve block portion 31, the size shape of cross section with the first air inlet duct 21, size phase respectively Together, so that valve block portion 31 can cover all three air inlets 211.

Further, with reference to Fig. 1 and Fig. 3, location division 32 extends straight down from the lower face in valve block portion 31, and location division 32 lower part has the positioning ball 321 of substantially spheroidal, herein, when valve block 3 moves between an open position and a closed, only There is valve block portion 31 to perform opening and closing action, location division 32 is fixed all the time.

As shown in figure 3, air pump 100, during work, gas such as air, bottom-up can enter air inlet 211, it is valve block portion 31 is open-top upwards so that gas can enter in inlet chamber S1.Wherein, the quantity and shape of air inlet 211 Shape can also be set according to actual requirement, preferably to meet actual requirement.In addition, the arrow shown in Fig. 3, Fig. 4, Fig. 5, Fig. 9 Head is used for the flow direction for indicating gas.

Wherein, inlet chamber S1 can be multiple and multiple circumferentially spaced distributions of inlet chamber S1.Such as the example in Fig. 1 In, upper cover 1 limits three inlet chamber S1 jointly with valve seat 2, and three inlet chamber S1 are evenly distributed in the week of central axis Upwards, and each inlet chamber S1 structure all same, internal partition portion 41 is also three at this time, and the structure in three internal partition portions 41 Also it is identical.Certainly, the present invention is not limited thereto, and the structure and quantity of inlet chamber S1 can also be set according to actual requirement, with more preferable Ground meets actual requirement.

As shown in figs. 4 and 7, the bottom wall of the first air inlet duct 21 is higher than the bottom wall of the first outgassing groove 22, the second air inlet duct 12 Roof it is concordant with the roof of the second outgassing groove 13, that is to say, that the depth that the first air inlet duct 21 is downwardly concaved goes out less than first The depth that air drain 22 is downwardly concaved, and the upwardly recessed depth of the second air inlet duct 12 is equal to the upwardly recessed depth of the second outgassing groove 13 Degree, so that the height of inlet chamber S1 in the up-down direction is less than the height of outlet chamber S2 in the up-down direction, to ensure outlet chamber The space of S2 can be larger, further improves noise reduction.

In one embodiment of the invention, it is equipped with the first exhaust upwardly extended with reference to Fig. 3, Fig. 4 and Fig. 7, valve seat 2 Pipe 23, upper cover 1 are equipped with the second exhaust pipe 15 extended downwardly, and downtake pipe 23 coordinates with second exhaust pipe 15 to limit The both ends of exhaust passage S4, exhaust passage S4 are connected with outlet chamber S2 and gas outlet 11 respectively, wherein, the both ends of exhaust passage S4 Respectively inlet end and an outlet end, wherein input end are connected with outlet chamber S2, and the port of export is connected with gas outlet 11, outlet chamber Gas in S2 can enter in exhaust passage S4 from the input end of exhaust passage S4, be flowed then along exhaust passage S4, most Upper cover 1 is discharged from gas outlet 11 by the port of export of exhaust passage S4 afterwards.

Wherein, as shown in figure 3, the volume of exhaust passage S4 is less than the volume of outlet chamber S2.Thus, by setting exhaust logical Road S4, gas can be drained into the less exhaust passage S4 of volume from the larger outlet chamber S2 of volume, effectively to change gas The flow velocity and pressure of body, so as to further reduce exhaust noise.

Further, second exhaust pipe 15 is stretched into downtake pipe 23, the outer wall and first exhaust of second exhaust pipe 15 The inner wall of pipe 23 is spaced apart from each other to limit exhaust passage S4.With reference to Fig. 4 and Fig. 9, and Fig. 3 is combined, on downtake pipe 23 Formed with the first hole 231, the first hole 231 can be blind hole, and the first hole 231 can from the roof of downtake pipe 23 vertically to Under it is recessed, formed with the second hole 151 on second exhaust pipe 15, the second hole 151 can be through hole or blind hole, when the second hole 151 For through hole when, the open bottom end of second exhaust pipe 15, when the second hole 151 is blind hole, the bottom of second exhaust pipe 15 is sealing End.

As shown in figure 3, after upper cover 1 and valve seat 2 coordinate in place, second exhaust pipe 15 is extended downwardly into the first hole 231, the The diameter in one hole 231 is more than the outside diameter of second exhaust pipe 15, so that the periphery wall of second exhaust pipe 15 and the perisporium in the first hole 231 It is spaced apart from each other, at this time, exhaust passage S4 can include the first subchannel S41 for communicating with each other and the second subchannel S42, and first Gaps of the subchannel S41 between 15 and first hole 231 of second exhaust pipe, the second subchannel S42 are the second hole 151, at this time The top open ports of two subchannel S42 are the gas outlet 11 of upper cover 1.

Specifically, the top of downtake pipe 23 is equipped with least one first intercommunicating pore 232 for by exhaust passage S4 Connected with outlet chamber S2.Such as in the example of Fig. 4-Fig. 6, the first intercommunicating pore 232 runs through downtake pipe 23 along inward-outward direction Top, and the first intercommunicating pore 232 can also be downwardly concaved from the top of downtake pipe 23 and form, so that the first intercommunicating pore 232 the inner is connected with the first subchannel S41, and the outer end of the first intercommunicating pore 232 is connected with outlet chamber S2, in this way, reference Gas in Fig. 3, outlet chamber S2 can be entered in the first subchannel S41 by the first intercommunicating pore 232.

Alternatively, with reference to Fig. 5, the first intercommunicating pore 232 is two and two the first intercommunicating pores 232 along downtake pipe 23 Diametrically, that is to say, that two the first intercommunicating pores 232 can in circumferentially-spaced 180 ° of arrangements of downtake pipe 23, from And can ensure that the gas in outlet chamber S2 is uniformly flowed into exhaust passage S4, and exhaust efficiency can be improved.Certainly, this hair Bright not limited to this, structure, quantity and the distributing position of the first intercommunicating pore 232 can also be set according to actual requirement, with more preferable Ground meets actual requirement.

When one end for stretching into downtake pipe 23 of second exhaust pipe 15 is open end, side of the open end along gas outlet 11 To extension to be connected with gas outlet 11, at this time, direction (the i.e. flow direction of outlet, such as scheme of second hole 151 along gas outlet Above-below direction shown in 3) run through second exhaust pipe 15, and above and below the bottom wall in the lower end of second exhaust pipe 15 and the first hole 231 It is spaced apart, the open ports of the bottom in the second hole 151 can be understood as the open bottom end end of second exhaust pipe 15, the second hole at this time The open ports at 151 top can be understood as the gas outlet 11 of upper cover 1, and the top in the second hole 151 is exhaust passage S4 The port of export.Thus, the second subchannel can be entered by the open end of second exhaust pipe into the gas in the first subchannel S41 In S42, then upper cover 1 is discharged from the gas outlet 11 at the top of the second subchannel S42.Wherein, the arrow shown in Fig. 4 and Fig. 5 is used In the flow direction of instruction gas.

When one end for stretching into downtake pipe 23 of second exhaust pipe 15 is sealed end, the perisporium of second exhaust pipe 15 is set There is at least one second intercommunicating pore to connect exhaust passage S4 with gas outlet 11.Second intercommunicating pore runs through second along inward-outward direction The bottom perisporium of exhaust pipe, thus the second intercommunicating pore the inner be connected with the second subchannel S42, the outer end of the second intercommunicating pore and First subchannel S41 is connected, in this way, with reference to Fig. 3, can pass through the second intercommunicating pore into the gas in the first subchannel S41 Into in the second subchannel S42, then upper cover 1 is discharged from the gas outlet 11 at the top of the second subchannel S42.Wherein, Fig. 4 and Fig. 5 Shown in arrow be used to indicate the flow direction of gas.

Second intercommunicating pore for two and two the second intercommunicating pores along second exhaust pipe 15 diametrically.With reference to Fig. 5, two Second intercommunicating pore can thereby may be ensured that in the first subchannel S41 in circumferentially-spaced 180 ° of arrangements of second exhaust pipe 15 Gas uniformly flow into the second subchannel S42, to improve exhaust efficiency.Certainly, the present invention is not limited thereto, the second intercommunicating pore Structure, quantity and distributing position can also be set according to actual requirement, preferably to meet actual requirement.

In this way, since the first intercommunicating pore 232 is located at the top of downtake pipe 23, the second intercommunicating pore is located at second exhaust pipe 15 bottom, and downtake pipe 23 is substantially concordant with the top of second exhaust pipe 15, downtake pipe 23 and second exhaust pipe 15 bottom is also substantially concordant, so that the first intercommunicating pore 232 and the second intercommunicating pore are in downtake pipe 23 or second exhaust pipe 15 Axial direction on interlaced arrangement, it is preferable that the first intercommunicating pore 232 and the second intercommunicating pore are in downtake pipe 23 or second exhaust pipe 15 Radial direction be staggered, that is to say, that the first intercommunicating pore 232 and the second intercommunicating pore are perpendicular to downtake pipe 23 or the Projection in the plane (such as horizontal plane shown in Fig. 3) of two exhaust pipes, 15 extending direction is spaced apart from each other, so as into One step extends the length of exhaust passage S4, to be effectively reduced exhaust noise.

In addition, it is necessary to explanation, when one end for stretching into downtake pipe 23 of second exhaust pipe 15 is sealed end, the One end that two exhaust pipes 15 stretch into downtake pipe 23 can be fixed on the bottom surface of downtake pipe 23, for example, second exhaust pipe 15 lower end can be linked together with the bottom wall in the first hole 231 by ultrasonic fusion techniques.Thus, it is possible to it is logical to extend exhaust The length of road S4, further reduces exhaust noise.

The exhaust work process of air pump 100 according to an embodiment of the invention is briefly described referring to Fig. 3-Fig. 5.

When air pump 100 is vented, valve block 3 on air inlet 211 is covered in by open-top upwards, gas initially enters inlet chamber S1 It is interior, then entered by air inlet connected entrance 431 in curved communicating passage S3, then the gas in communicating passage S3 is along outlet Connected entrance 432 is discharged in outlet chamber S2, and then it is logical can to enter exhaust by the first intercommunicating pore 232 for the gas in outlet chamber S2 In the first subchannel S41 of road S4, then from the first subchannel S41 the second subchannel S42 is flowed to, finally from the gas outlet of upper cover 1 11 discharges.

Thus, gas is i.e. long and complicated from the flow path for entering valve seat 2 to outflow upper cover 1, and gas can be large and small Intracavitary alternately flows, so as to effectively change the flow velocity of gas and pressure, to realize effectively noise reduction.

In the description of the present invention, it is to be understood that term " " center ", " on ", " under ", " vertical ", " level ", The orientation or position relationship of the instruction such as " top ", " bottom ", " interior ", " outer ", " axial direction ", " radial direction ", " circumferential direction " are based on shown in attached drawing Orientation or position relationship, be for only for ease of the description present invention and simplify description, rather than instruction or imply signified device Or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not considered as limiting the invention.

In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or Implicitly include one or more this feature.In the description of the present invention, " multiple " are meant that two or more, Unless otherwise specifically defined.

In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc. Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；It can be direct phase Even, it can also be indirectly connected by intermediary, can be that connection inside two elements or the interaction of two elements are closed System.For the ordinary skill in the art, above-mentioned term in the present invention specific can be understood as the case may be Implication.

In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms is not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office Combined in an appropriate manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this area Art personnel can be tied the different embodiments or example described in this specification and different embodiments or exemplary feature Close and combine.

Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not In the case of departing from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this The scope of invention is limited by claim and its equivalent.

Claims (15)

1. A kind of 1. air pump, it is characterised in that including：

   Upper cover, formed with gas outlet on the upper lid；

   Valve seat, the valve seat are located at the bottom of the upper cover, formed with air inlet, the valve seat and the upper cover on the valve seat Between limit accommodating chamber, partition plate is equipped with the accommodating chamber so that the accommodating chamber is separated into inlet chamber and outlet chamber, it is described Inlet chamber is connected with the air inlet, and the outlet chamber is connected with the gas outlet, and the inlet chamber and the outlet chamber pass through The communicating passage that is limited between the upper cover and the valve seat and be connected, wherein the communicating passage is around the accommodating chamber Set；And

   Valve block, the valve block are movably arranged at the air inlet and sentence the opening and closing air inlet.
2. 2. air pump according to claim 1, it is characterised in that the communicating passage extends along curve.
3. 3. air pump according to claim 1, it is characterised in that the top of the valve seat is described formed with the first air inlet duct The bottom of upper cover limits the air inlet jointly formed with the second air inlet duct, first air inlet duct with second air inlet duct Chamber.
4. 4. air pump according to claim 3, it is characterised in that the air inlet is formed in the bottom wall of first air inlet duct On, formed with the location hole being spaced apart with the air inlet on the bottom wall of first air inlet duct,

   The valve block includes valve block portion and location division, and the valve block portion is connected to the upper end of the location division and is located at the air inlet Intracavitary, the lower end of the location division coordinate with the location hole, and the valve block portion is covered on the air inlet.
5. 5. air pump according to claim 4, it is characterised in that the air inlet is multiple and the multiple air inlet along institute State the circumferentially-spaced distribution of location hole.
6. 6. air pump according to claim 3, it is characterised in that the top of the valve seat goes out formed with first be downwardly concaved Air drain, the bottom of the upper cover is formed with the second upwardly recessed outgassing groove, first outgassing groove and second outgassing groove The outlet chamber is limited jointly.
7. 7. air pump according to claim 6, it is characterised in that the bottom wall of first air inlet duct is higher than first outlet The bottom wall of groove, the roof of second air inlet duct are concordant with the roof of second outgassing groove.
8. 8. air pump according to claim 1, it is characterised in that on the side wall of the accommodating chamber formed with air inlet connected entrance and Outlet connected entrance, the air inlet connected entrance connect the inlet chamber with the communicating passage, and the outlet connected entrance is by described in Communicating passage is connected with the outlet chamber.
9. 9. air pump according to claim 1, it is characterised in that the inlet chamber is multiple and the multiple inlet chamber edge week To distribution spaced apart.
10. 10. according to the air pump any one of claim 1-9, it is characterised in that the valve seat is equipped with what is upwardly extended Downtake pipe, the upper lid are equipped with the second exhaust pipe extended downwardly, the downtake pipe and the second exhaust pipe Coordinate to limit exhaust passage, the both ends of the exhaust passage are connected with the outlet chamber and the gas outlet respectively.
11. 11. air pump according to claim 10, it is characterised in that the second exhaust pipe stretches into the downtake pipe Interior, the outer wall of the second exhaust pipe and the inner wall of the downtake pipe are spaced apart from each other to limit the exhaust passage.
12. 12. air pump according to claim 11, it is characterised in that the top of the downtake pipe is equipped with least one the One intercommunicating pore is the exhaust passage to be connected with the outlet chamber, the open bottom end of the second exhaust pipe and along the outlet The direction extension of mouth.
13. 13. air pump according to claim 12, it is characterised in that first intercommunicating pore is two and described two first Intercommunicating pore along the downtake pipe diametrically.
14. 14. air pump according to claim 10, it is characterised in that the top of the downtake pipe is equipped with least one the For one intercommunicating pore the exhaust passage to be connected with the outlet chamber, the second exhaust pipe stretches into the one of the downtake pipe Hold as sealed end, the perisporium of the second exhaust pipe be equipped with least one second intercommunicating pore with by the exhaust passage with it is described go out Gas port connects.
15. 15. air pump according to claim 14, it is characterised in that the second exhaust pipe stretches into the downtake pipe One end is fixed on the bottom surface of the downtake pipe, and second intercommunicating pore is described in two and described two second intercommunicating pores edge Diametrically, first intercommunicating pore is staggered second exhaust pipe with the second intercommunicating pore radial direction.