US20140255230A1 - Miniature pump device - Google Patents
Miniature pump device Download PDFInfo
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- US20140255230A1 US20140255230A1 US14/188,703 US201414188703A US2014255230A1 US 20140255230 A1 US20140255230 A1 US 20140255230A1 US 201414188703 A US201414188703 A US 201414188703A US 2014255230 A1 US2014255230 A1 US 2014255230A1
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- Prior art keywords
- valve
- output
- hole
- air pump
- base
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/06—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having tubular flexible members
- F04B45/065—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having tubular flexible members with electric drive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/021—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms the plate-like flexible member is pressed against a wall by a number of elements, each having an alternating movement in a direction perpendicular to the plane of the plate-like flexible member and each having its own driving mechanism
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
Definitions
- the present invention relates to a miniature pump device.
- a miniature pump is a smaller size pump. Because the miniature pump's volume is reduced, only a motor of a lower power can be installed in the miniature pump. Therefore, the efficiency of miniature pump depends on its valve or chamber design.
- a miniature air pump includes a driving unit and an airflow control unit, which is driven by the driving unit to input or output airflows.
- the airflow control unit includes a piston base, a piston unit, a first valve base, a first output valve, a second valve base, and a second output valve.
- the piston base has at least one first intake through hole.
- the piston unit has at least one intake valve and at least one bladder portion, wherein the intake valve is covered over the first intake through hole.
- the first valve base is located over the piston unit, a bottom surface of the first valve base has at least one flow guide groove, which crosses the intake valve and the bladder portion, the first valve base has at least one first output through hole corresponding to the bladder portion, the first valve base further includes a circular wall surrounding the first output through hole.
- the first output valve is located over the first output through hole.
- the second valve base is coupled to the circular wall to collectively define a compression chamber, and the second valve base has at least one second output through hole communicating with the compression chamber.
- the second output valve is covered over the second output through hole.
- the first output valve includes a four-petal-flower-shaped valve.
- the second output valve includes an umbrella-shaped valve.
- the first output valve has a greater covering area than the second output valve has.
- the miniature air pump further includes an upper cover disposed over the first valve base and the second valve base, wherein the piston base, the piston unit, the first valve base and the upper cover commonly share a second intake through hole.
- the second valve base has a double-circular wall surrounding the second output through hole.
- the upper cover has an air outlet, which communicates with an area surrounded by the double-circular wall.
- the miniature air pump further includes a seal ring filled into a seal groove of the double-circular wall.
- the driving unit includes a motor and an oblique linkage, and the oblique linkage is coupled with a rotation axis of the motor.
- the oblique linkage has a plurality of connection ports, and each connection port is coupled with a bottom end of the bladder portion.
- the bladder portion of the piston unit is compressed and airflows are forced by the first output valve for the first time, and then forced by the second output valve for the second time. Therefore, the airflows of the miniature air pump can be output with a higher pressure.
- two one-way valves i.e., the first output valve and the second output valve, are able to stop the reversed-airflows and enhance the output pressure.
- FIG. 1 illustrates an exploded view of a miniature air pump according to one embodiment of this invention
- FIG. 2 illustrates a cross-sectional view of the miniature air pump in FIG. 1 , which all components are assembled
- FIG. 3 illustrates an enlarged view of partial components of the miniature air pump in FIG. 1 ;
- FIG. 4 illustrates an enlarged view of the first valve base in FIG. 1 ;
- FIG. 5 illustrates an enlarged view of the second valve base in FIG. 1 ;
- FIG. 6 illustrates a cross-sectional view of the second valve taken along a cross-sectional line 6 - 6 in FIG. 5 ;
- FIG. 7 illustrates an enlarged view of the first output valve in FIG. 1 ;
- FIG. 8 illustrates a cross-sectional view of the first output valve, taken along a cross-sectional line 8 - 8 ′ in FIGS. 7 ;
- FIG. 9 illustrates a cross-sectional view of the first output valve taken along a cross-sectional line 9 - 9 ′ in FIG. 7 .
- FIG. 1 illustrates an exploded view of a miniature air pump according to one embodiment of this invention.
- a miniature air pump 200 basically includes a driving unit and an airflow control unit. The airflow control unit is driven by the driving unit to input or output airflows so as to perform the major functions of the miniature air pump.
- the driving unit basically includes a motor 226 , a motor base 224 and an oblique linkage 218 .
- the motor 226 is secured to the motor base 224 by a plurality of screws 224 a.
- the oblique linkage 218 is coupled with a rotation axis 226 a of the motor 226 by a steel rod 219 and an eccentric shaft. 220 . Therefore, the motor 226 is able to drive the oblique linkage 218 to rotate.
- the airflow control unit basically includes a piston base 216 , a piston unit 214 , a first valve base 212 , a first output valve 210 , a second valve base 208 , a second output valve 206 and an upper cover 204 .
- the piston base 216 has several receiving holes 216 c for bladder portions 214 a of the piston unit 214 to be accommodated within. The amount of the bladder portion 214 a may be varied according, to actual demands.
- the piston base 216 should have receiving holes 216 c to accommodate bladder portions 214 a, and each receiving. hole 216 c is used to accommodate a corresponding bladder portion 214 a.
- the first valve base 212 is mounted over the piston base 216 and the piston unit 214 .
- the miniature air pump 200 is equipped with an anti-reverse-flow double-stage structure, which includes a first valve base 212 , a first output valve 210 , a second valve base 208 and a second output valve 206 .
- Several bolts 202 are led through corresponding holes at four corners of the upper cover 204 , the first valve base 212 and the piston base 216 , and then screwed into four corners of the motor base 224 so as to secure the airflow control unit of the miniature air pump 200 .
- first output valve 210 may be a four-petal-flower-shaped valve, but not being limited to, while the second output valve 206 may be an umbrella-shaped valve, but not being, limited to.
- the oblique linkage 218 has a plurality of connection ports 248 a at its end portions. Each connection port 218 a is coupled with a bottom end of the bladder portion 214 a.
- the motor 226 drives the oblique linkage 218 to rotate, the bladder portion 214 a is compressed or decompressed so as to perform the major functions of the miniature air pump.
- FIG. 2 illustrates a cross-sectional view of the miniature air pump in FIG. 1 , which all components are assembled
- FIG. 3 illustrates an enlarged view of partial components of the miniature air pump in FIG. 1 .
- the miniature air pump is used to supply pressured airflows, and needs to input airflows before supplying or outputting airflows.
- the bladder portion 214 a is being decompressed.
- the airflows are routed through the communicated second intake through holes ( 204 b, 212 a, 214 b, 216 b ) on the upper cover 204 , the first valve base 212 , the piston unit 214 and the piston base 216 along a direction 100 a, routed into a hollow chamber, which is collectively defined by the piston base 216 and the motor base 224 , along a direction 100 b, and then routed through a second intake through hole 216 a and an intake valve 214 c of the piston unit 214 along a direction 100 c, and routed into the bladder portion 214 a through a flow guide groove 212 b on a bottom surface of the first valve base 212 .
- the flow guide groove 212 b crosses the paired intake valve 214 c and the bladder portion 214 a.
- the bladder portion 214 a is being compressed.
- the airflows are routed into a compression chamber 212 d via a first output through hole 212 e, the first valve base 212 and the first output valve 210 along a direction 100 d, routed through the second output through hole 208 d , the second valve base 208 and the second output valve 206 along a direction 100 e, and then output via an air outlet 204 a along a direction 100 f.
- the first output valve 210 has a greater covering area (the area which the first output valve 210 covers over the first valve base) than the second output valve 206 has (the area which the first output valve 206 covers over the second valve base).
- the upper cover 204 has an air outlet 204 a, which communicates with an area surrounded by the double-circular wall 208 b , to output airflows.
- FIG. 4 illustrates an enlarged view of the first valve base in FIG. 1
- FIG. 5 illustrates an enlarged view of the second valve base in FIG. 1
- FIG. 6 illustrates a cross-sectional view of the second valve taken along a cross-sectional line 6 - 6 ′ in FIG. 5
- the second valve base 208 in FIGS. 5 & 6 is secured to a circular wall 212 c of the first valve base 212 in FIG. 4 such that the second valve base 208 and the circular wall 212 c of the first valve base 212 collectively form a compression chamber 212 d.
- the circular wall 212 c is used to surround the first output through hole 212 e (one or more first output through holes).
- the second valve base 208 When the circular wall 212 c of the first valve base 212 is assembled with the second valve base 208 , the second valve base 208 has at least one second output through hole 208 d communicated with the compression chamber 212 d.
- the second valve base 208 has a double-circular wall 208 b surrounding the second output through hole 208 d (one or more second output through holes).
- the double-circular wall 208 b has a circular seal groove 208 c into which a seal ring, i.e., the seal ring 205 as illustrated in FIG. 1 , may be installed.
- a disc body 208 a of the second valve base 208 is equipped with a position rib 208 g to be inserted into a position hole 212 h of the circular wall 212 c.
- a central position hole 208 e of the second valve base 208 is used to be inserted by a shaft portion of the second output valve 206 .
- a bottom protruding rib 208 f of the second valve base 208 is used to contact a top surface of the first output valve 210 so as to secure the first output valve 210 within the compression chamber 212 d (referring to FIG. 7 ).
- FIG. 7 illustrates an enlarged view of the first output valve of the miniature air pump in FIG. 1
- FIG. 8 illustrates a cross-sectional view of the first output valve taken along a cross-sectional line 8 - 8 ′ in FIG. 7
- FIG. 9 illustrates a cross-sectional view of the first output valve taken along a cross-sectional line 9 - 9 ′ in FIG. 7
- the first output valve 210 is used to cover the first output through hole 212 e of the first valve base 212 , which is surrounded by the circular wall 212 c.
- the first output valve 210 includes a cross-shaped fastener 210 b and multiple valve portions 210 c .
- the cross-shaped fastener 210 b is used to engage a cross-shaped groove 212 f of the first valve base 212 (referring to FIG. 4 ) such that multiple valve portions 210 c (e.g., four valve portions) of the first output valve 210 are covered over multiple first output through holes 212 e, respectively.
- the first output valve 210 may be a four-petal-flower-shaped valve, which has four valve portions 210 c to cover four corresponding first output through holes 212 e, but not being limited to the four-petal-flower-shaped valve.
- the bladder portion of the piston unit when the miniature air pump operates, the bladder portion of the piston unit is compressed and airflows are forced by the first output valve for the first time, and then forced by the second output valve for the second time. Therefore, the airflows of the miniature air pump can be output with a higher pressure.
- two one-way valves i.e., the first output valve and the second output valve, are able to stop the reversed-airflows and enhance the output pressure.
Abstract
An air pump includes a driving unit and an airflow control unit. A piston base has a first intake through hole. A piston unit has an intake valve and a bladder portion, and the intake valve is located over the first intake through hole. A first valve base is located over the piston unit. A flow guide groove of the first valve base crosses over the paired intake valve and bladder portion. The first valve base has a first output through hole. The first valve base has a circular wall surrounding the first output through hole. A first output valve is located over the first output through hole. A second valve base is coupled to the circular wall to define a compression chamber. The second valve base has a second output through hole communicating with the compression chamber. A second output valve is located over the second output through hole.
Description
- This application claims priority to Taiwan Application Serial Number 102108483 filed Mar. 11, 2013, which is herein incorporated by reference.
- 1. Field of Invention
- The present invention relates to a miniature pump device.
- 2. Description of Related Art
- A miniature pump is a smaller size pump. Because the miniature pump's volume is reduced, only a motor of a lower power can be installed in the miniature pump. Therefore, the efficiency of miniature pump depends on its valve or chamber design.
- One shortcoming of a conventional miniature pump is the output airflows with lower pressure, more effort is thus needed to enhance the output pressure based upon the same power motor and same size volume.
- It is therefore an objective of the present invention to provide as miniature air pump to deal with the problems as discussed in the prior art.
- In accordance with the foregoing and other objectives of the present invention, a miniature air pump includes a driving unit and an airflow control unit, which is driven by the driving unit to input or output airflows. The airflow control unit includes a piston base, a piston unit, a first valve base, a first output valve, a second valve base, and a second output valve. The piston base has at least one first intake through hole. The piston unit has at least one intake valve and at least one bladder portion, wherein the intake valve is covered over the first intake through hole. The first valve base is located over the piston unit, a bottom surface of the first valve base has at least one flow guide groove, which crosses the intake valve and the bladder portion, the first valve base has at least one first output through hole corresponding to the bladder portion, the first valve base further includes a circular wall surrounding the first output through hole. The first output valve is located over the first output through hole. The second valve base is coupled to the circular wall to collectively define a compression chamber, and the second valve base has at least one second output through hole communicating with the compression chamber. The second output valve is covered over the second output through hole. When the bladder portion is being compressed, airflows inside the bladder portion are output through the first output through hole, the first output valve, the compression chamber, the second output through hole and the second output valve sequentially. When the bladder portion is being decompressed, airflows are introduced into the bladder portion through the first intake through hole, the intake valve and the flow guide groove sequentially.
- According to another embodiment disclosed herein, the first output valve includes a four-petal-flower-shaped valve.
- According to another embodiment disclosed herein, the second output valve includes an umbrella-shaped valve.
- According to another embodiment disclosed herein, the first output valve has a greater covering area than the second output valve has.
- According to another embodiment disclosed herein, the miniature air pump further includes an upper cover disposed over the first valve base and the second valve base, wherein the piston base, the piston unit, the first valve base and the upper cover commonly share a second intake through hole.
- According to another embodiment disclosed herein, the second valve base has a double-circular wall surrounding the second output through hole.
- According to another embodiment disclosed herein, the upper cover has an air outlet, which communicates with an area surrounded by the double-circular wall.
- According to another embodiment disclosed herein, the miniature air pump further includes a seal ring filled into a seal groove of the double-circular wall.
- According to another embodiment disclosed herein, the driving unit includes a motor and an oblique linkage, and the oblique linkage is coupled with a rotation axis of the motor.
- According to another embodiment disclosed herein, the oblique linkage has a plurality of connection ports, and each connection port is coupled with a bottom end of the bladder portion.
- Thus, when the miniature air pump operates, the bladder portion of the piston unit is compressed and airflows are forced by the first output valve for the first time, and then forced by the second output valve for the second time. Therefore, the airflows of the miniature air pump can be output with a higher pressure. When airflows are reversed, two one-way valves, i.e., the first output valve and the second output valve, are able to stop the reversed-airflows and enhance the output pressure.
- It is to be understood that both the foregoing general description and the following detailed description are by examples, and are intended to provide further explanation of the invention as claimed.
- The invention can be more fully understood by reading the following detailed. description of the embodiment, with reference made to the accompanying drawings as follows:
-
FIG. 1 illustrates an exploded view of a miniature air pump according to one embodiment of this invention; -
FIG. 2 illustrates a cross-sectional view of the miniature air pump inFIG. 1 , which all components are assembled; -
FIG. 3 illustrates an enlarged view of partial components of the miniature air pump inFIG. 1 ; -
FIG. 4 illustrates an enlarged view of the first valve base inFIG. 1 ; -
FIG. 5 illustrates an enlarged view of the second valve base inFIG. 1 ; -
FIG. 6 illustrates a cross-sectional view of the second valve taken along a cross-sectional line 6-6 inFIG. 5 ; -
FIG. 7 illustrates an enlarged view of the first output valve inFIG. 1 ; -
FIG. 8 illustrates a cross-sectional view of the first output valve, taken along a cross-sectional line 8-8′ inFIGS. 7 ; and -
FIG. 9 illustrates a cross-sectional view of the first output valve taken along a cross-sectional line 9-9′ inFIG. 7 . - Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.
-
FIG. 1 illustrates an exploded view of a miniature air pump according to one embodiment of this invention. Aminiature air pump 200 basically includes a driving unit and an airflow control unit. The airflow control unit is driven by the driving unit to input or output airflows so as to perform the major functions of the miniature air pump. - The driving unit basically includes a
motor 226, amotor base 224 and anoblique linkage 218. Themotor 226 is secured to themotor base 224 by a plurality ofscrews 224 a. Theoblique linkage 218 is coupled with arotation axis 226 a of themotor 226 by asteel rod 219 and an eccentric shaft. 220. Therefore, themotor 226 is able to drive theoblique linkage 218 to rotate. - The airflow control unit basically includes a
piston base 216, apiston unit 214, afirst valve base 212, afirst output valve 210, asecond valve base 208, asecond output valve 206 and anupper cover 204. Thepiston base 216 has several receivingholes 216 c forbladder portions 214 a of thepiston unit 214 to be accommodated within. The amount of thebladder portion 214 a may be varied according, to actual demands. Thepiston base 216 should have receivingholes 216 c to accommodatebladder portions 214 a, and each receiving.hole 216 c is used to accommodate acorresponding bladder portion 214 a. When thepiston base 216 and thepiston unit 214 are assembled, thefirst valve base 212 is mounted over thepiston base 216 and thepiston unit 214. in order to increase an output pressure of the miniature air pump, theminiature air pump 200 is equipped with an anti-reverse-flow double-stage structure, which includes afirst valve base 212, afirst output valve 210, asecond valve base 208 and asecond output valve 206.Several bolts 202 are led through corresponding holes at four corners of theupper cover 204, thefirst valve base 212 and thepiston base 216, and then screwed into four corners of themotor base 224 so as to secure the airflow control unit of theminiature air pump 200. One or more seal rings may be installed between theupper cover 204 and thefirst valve base 212 to increase the airtight level. In this embodiment, thefirst output valve 210 may be a four-petal-flower-shaped valve, but not being limited to, while thesecond output valve 206 may be an umbrella-shaped valve, but not being, limited to. - In addition, the
oblique linkage 218 has a plurality of connection ports 248 a at its end portions. Eachconnection port 218 a is coupled with a bottom end of thebladder portion 214 a. When themotor 226 drives theoblique linkage 218 to rotate, thebladder portion 214 a is compressed or decompressed so as to perform the major functions of the miniature air pump. - Referring to
FIG. 2 andFIG. 3 ,FIG. 2 illustrates a cross-sectional view of the miniature air pump inFIG. 1 , which all components are assembled, whileFIG. 3 illustrates an enlarged view of partial components of the miniature air pump inFIG. 1 . The miniature air pump is used to supply pressured airflows, and needs to input airflows before supplying or outputting airflows. When theminiature air pump 200 introduces airflows, thebladder portion 214 a is being decompressed. The airflows are routed through the communicated second intake through holes (204 b, 212 a, 214 b, 216 b) on theupper cover 204, thefirst valve base 212, thepiston unit 214 and thepiston base 216 along adirection 100 a, routed into a hollow chamber, which is collectively defined by thepiston base 216 and themotor base 224, along adirection 100 b, and then routed through a second intake throughhole 216 a and anintake valve 214 c of thepiston unit 214 along adirection 100 c, and routed into thebladder portion 214 a through aflow guide groove 212 b on a bottom surface of thefirst valve base 212. Theflow guide groove 212 b crosses the pairedintake valve 214 c and thebladder portion 214 a. When theminiature air pump 200 supplies airflows, thebladder portion 214 a is being compressed. The airflows are routed into acompression chamber 212 d via a first output throughhole 212 e, thefirst valve base 212 and thefirst output valve 210 along adirection 100 d, routed through the second output throughhole 208 d, thesecond valve base 208 and thesecond output valve 206 along adirection 100 e, and then output via anair outlet 204 a along adirection 100 f. In this embodiment, thefirst output valve 210 has a greater covering area (the area which thefirst output valve 210 covers over the first valve base) than thesecond output valve 206 has (the area which thefirst output valve 206 covers over the second valve base). In addition, theupper cover 204 has anair outlet 204 a, which communicates with an area surrounded by the double-circular wall 208 b, to output airflows. - Referring to
FIGS. 4-6 ,FIG. 4 illustrates an enlarged view of the first valve base inFIG. 1 ,FIG. 5 illustrates an enlarged view of the second valve base inFIG. 1 , andFIG. 6 illustrates a cross-sectional view of the second valve taken along a cross-sectional line 6-6′ inFIG. 5 . Thesecond valve base 208 inFIGS. 5 & 6 is secured to acircular wall 212 c of thefirst valve base 212 inFIG. 4 such that thesecond valve base 208 and thecircular wall 212 c of thefirst valve base 212 collectively form acompression chamber 212 d. Thecircular wall 212 c is used to surround the first output throughhole 212 e (one or more first output through holes). When thecircular wall 212 c of thefirst valve base 212 is assembled with thesecond valve base 208, thesecond valve base 208 has at least one second output throughhole 208 d communicated with thecompression chamber 212 d. Thesecond valve base 208 has a double-circular wall 208 b surrounding the second output throughhole 208 d (one or more second output through holes). The double-circular wall 208 b has acircular seal groove 208 c into which a seal ring, i.e., theseal ring 205 as illustrated inFIG. 1 , may be installed. In order to precisely position thesecond valve base 208 on thecircular wall 212 c, adisc body 208 a of thesecond valve base 208 is equipped with aposition rib 208 g to be inserted into aposition hole 212 h of thecircular wall 212 c. In addition, acentral position hole 208 e of thesecond valve base 208 is used to be inserted by a shaft portion of thesecond output valve 206. Abottom protruding rib 208 f of thesecond valve base 208 is used to contact a top surface of thefirst output valve 210 so as to secure thefirst output valve 210 within thecompression chamber 212 d (referring toFIG. 7 ). - Referring to
FIGS. 7-9 ,FIG. 7 illustrates an enlarged view of the first output valve of the miniature air pump inFIG. 1 ,FIG. 8 illustrates a cross-sectional view of the first output valve taken along a cross-sectional line 8-8′ inFIG. 7 , andFIG. 9 illustrates a cross-sectional view of the first output valve taken along a cross-sectional line 9-9′ inFIG. 7 . Thefirst output valve 210 is used to cover the first output throughhole 212 e of thefirst valve base 212, which is surrounded by thecircular wall 212 c. Thefirst output valve 210 includes across-shaped fastener 210 b andmultiple valve portions 210 c. Thecross-shaped fastener 210 b is used to engage across-shaped groove 212 fof the first valve base 212 (referring toFIG. 4 ) such thatmultiple valve portions 210 c (e.g., four valve portions) of thefirst output valve 210 are covered over multiple first output throughholes 212 e, respectively. In this embodiment, thefirst output valve 210 may be a four-petal-flower-shaped valve, which has fourvalve portions 210 c to cover four corresponding first output throughholes 212 e, but not being limited to the four-petal-flower-shaped valve. - According to the above-discussed embodiments, when the miniature air pump operates, the bladder portion of the piston unit is compressed and airflows are forced by the first output valve for the first time, and then forced by the second output valve for the second time. Therefore, the airflows of the miniature air pump can be output with a higher pressure. When airflows are reversed, two one-way valves, i.e., the first output valve and the second output valve, are able to stop the reversed-airflows and enhance the output pressure.
- Although the present invention has been described in considerable detail with reference to certain embodiments thereof, other embodiments are possible. Therefore, the spirit and scope of the appended claims should not be limited to the description of the embodiments contained herein.
- It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present invention without departing from the scope or spirit of the invention, in view of the foregoing, it is intended that the present invention cover modifications and variations of this invention provided they fall within the scope of the following claims.
Claims (13)
1. A miniature air pump comprising:
a driving unit; and
an airflow control unit driven by the driving unit to input or output airflows, wherein the airflow control unit comprises:
a piston base having at least one first intake through hole;
a piston unit having at least one intake valve and at least one bladder portion, wherein the intake valve is covered over the first intake through hole;
a first valve base disposed over the piston unit, a bottom surface of the first valve base having at least one flow guide groove, which crosses the intake valve and the bladder portion, the first valve base having at least one first output through hole corresponding to the bladder portion, the first valve base further comprising a circular wall surrounding the first output through hole;
a first output valve disposed over the first output through hole;
a second valve base coupled to the circular wall to collectively define a compression chamber, the second valve base having at least one second output through hole communicating with the compression chamber; and
a second output valve covered over the second output through hole,
when the bladder portion is being compressed, airflows inside the bladder portion are output through the first output through hole, the first output valve, the compression chamber, the second output through hole and the second output valve sequentially,
when the bladder portion is being decompressed, airflows are introduced into the bladder portion through the first intake through hole, the intake valve and the flow guide groove sequentially.
2. The miniature air pump of claim 1 , wherein the first output valve comprises a four-petal-flower-shaped valve.
3. The miniature air pump of claim 2 , wherein the second output valve comprises an umbrella-shaped valve.
4. The miniature air pump of claim 3 , wherein the first output valve has a greater covering area than the second output valve has.
5. The miniature air pump of claim 1 , wherein the second output valve comprises an umbrella-shaped valve.
6. The miniature air pump of claim 1 , wherein the first output valve has a greater covering area than the second output valve has.
7. The miniature air pump of claim 1 further comprising an upper cover disposed over the first valve base and the second valve base, wherein the piston base, the piston unit, the first valve base and the upper cover commonly share to second intake through hole.
8. The miniature air pump of claim 7 , wherein the second valve base has a double-circular wall surrounding the second output through hole.
9. The miniature air pump of claim 8 , wherein the upper cover has an air outlet, which communicates with an area surrounded by the double-circular wall.
10. The miniature air pump of claim 9 further comprising a seal ring disposed into a seal groove of the double-circular wall.
11. The miniature air pump of claim 8 further comprising a seal ring disposed into a seal groove of the double-circular wall.
12. The miniature air pump of claim 1 , wherein the driving unit comprises a motor and an oblique linkage, the oblique linkage is coupled with a rotation axis of the motor.
13. The miniature air pump of claim 12 , wherein the oblique linkage has a plurality of connection ports, each connection port is coupled with a bottom end of the bladder portion.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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TW102108483A TWI509154B (en) | 2013-03-11 | 2013-03-11 | Miniature air pump |
TW102108483 | 2013-03-11 |
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US20140255230A1 true US20140255230A1 (en) | 2014-09-11 |
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ID=51385696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US14/188,703 Abandoned US20140255230A1 (en) | 2013-03-11 | 2014-02-25 | Miniature pump device |
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US (1) | US20140255230A1 (en) |
DE (1) | DE102014102594A1 (en) |
TW (1) | TWI509154B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US20150316045A1 (en) * | 2012-12-10 | 2015-11-05 | Kongsberg Automotive Ab | Unitary Fluid Flow Apparatus for Inflating and Deflating a Device |
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US4396357A (en) * | 1981-04-06 | 1983-08-02 | Product Research And Development | Diaphragm pump with ball bearing drive |
US5186475A (en) * | 1991-05-09 | 1993-02-16 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Gasket having retainer element for reed valve integrally formed therewith |
US6382928B1 (en) * | 2000-11-28 | 2002-05-07 | Kun-Lin Chang | Miniature air pump |
US6840745B1 (en) * | 1999-07-29 | 2005-01-11 | Munster Simms Engineering Limited | Diaphragm pump including a wobble plate |
US20060090642A1 (en) * | 2004-10-27 | 2006-05-04 | Hsu Chao F | Construction improvement of the piston valve in compressing pump |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW201241312A (en) * | 2007-09-07 | 2012-10-16 | Chao-Fou Hsu | Compressing diaphragm pump having automatic air expelling and pressure abnormal-preventing features for spray use |
CN102926976B (en) * | 2012-09-17 | 2015-04-01 | 厦门科际精密器材有限公司 | Micropump being easy to assemble |
-
2013
- 2013-03-11 TW TW102108483A patent/TWI509154B/en active
-
2014
- 2014-02-25 US US14/188,703 patent/US20140255230A1/en not_active Abandoned
- 2014-02-27 DE DE102014102594.6A patent/DE102014102594A1/en not_active Ceased
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4396357A (en) * | 1981-04-06 | 1983-08-02 | Product Research And Development | Diaphragm pump with ball bearing drive |
US5186475A (en) * | 1991-05-09 | 1993-02-16 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Gasket having retainer element for reed valve integrally formed therewith |
US6840745B1 (en) * | 1999-07-29 | 2005-01-11 | Munster Simms Engineering Limited | Diaphragm pump including a wobble plate |
US6382928B1 (en) * | 2000-11-28 | 2002-05-07 | Kun-Lin Chang | Miniature air pump |
US20060090642A1 (en) * | 2004-10-27 | 2006-05-04 | Hsu Chao F | Construction improvement of the piston valve in compressing pump |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150316045A1 (en) * | 2012-12-10 | 2015-11-05 | Kongsberg Automotive Ab | Unitary Fluid Flow Apparatus for Inflating and Deflating a Device |
US10107279B2 (en) * | 2012-12-10 | 2018-10-23 | Kongsberg Automotive Ab | Unitary fluid flow apparatus for inflating and deflating a device |
Also Published As
Publication number | Publication date |
---|---|
DE102014102594A1 (en) | 2014-09-11 |
TWI509154B (en) | 2015-11-21 |
TW201435210A (en) | 2014-09-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: XIAMEN KOGE MICRO TECH CO., LTD., CHINA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHANG, KUN-LIN;REEL/FRAME:032435/0334 Effective date: 20140122 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |