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公开(公告)号：US20210180585A1
公开(公告)日：2021-06-17
申请号：US16875576
申请日：2020-05-15
发明人： Qing-Xiang XU
摘要： A mini air pump which includes a diaphragm, a bladder base provided with penetrating bladder holes and air inlet channels, a pump body having a valve seat and a pump cover, an air inlet valve, an air outlet valve, a relief valve and a preload member is revealed. The valve seat is stacked over the diaphragm. An exhaust chamber and a spring chamber are constructed by the valve seat and the pump cover. The valve seat has exhaust channels communicating with the bladder cavity. A communicating return channel is constructed by the diaphragm, the bladder base and the valve seat. The return channel is communicating with the air inlet channel but not communicating with the spring chamber. A spring of the preload member applies a preload to the relief valve. Thereby the relief valve acts more accurately and the mini air pump is more stable in use.
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公开(公告)号：US10969031B2
公开(公告)日：2021-04-06
申请号：US16154735
申请日：2018-10-09
发明人： Xiaofeng Xu , Haiqiang Fu
摘要： The present invention discloses a movable valve core and an electromagnetic valve comprising the same. The movable valve core, comprising a cylindrical core body (1) defining a central axis, a leading head (2) fixed to the core body (1) removably, wherein a water-proof valve membrane (3) sandwiched between the core body (1) and the leading head (2), wherein a mounting hole (4) is axially formed in the core body (1), and a connector (5) for projecting into the mounting hole (4) extends axially from the bottom of the leading head (2), and the connector (5) is fixed into the mounting hole (4). The connector (5) is provided with an outer thread (6), and the leading head (2) is screwed into the mounting hole (4).
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公开(公告)号：US10859080B2
公开(公告)日：2020-12-08
申请号：US15864086
申请日：2018-01-08
发明人： Chih Chang
摘要： A valve head structure and a diaphragm pump having the same are provided. The valve head structure includes a pump body, the pump body including a bonnet and a valve seat connected to each other, the valve seat is provided with a first connecting member; a diaphragm assembly mounted to an upper face of the valve seat, the diaphragm assembly including a plate body provided with a second connecting member fitted with the first connecting member; and a water outlet disc integrally formed on the plate body; a water inlet disc provided with a recessed face with a downwards opening, the water inlet disc being at least partly fitted closely with the recessed face, so as to open or close the water inlet opening.
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公开(公告)号：US20200052186A1
公开(公告)日：2020-02-13
申请号：US16535095
申请日：2019-08-08
发明人： Chung-Han Wu , Jun-Yan Huang , Hsin-Cheng Wang
IPC分类号： H01L41/04 , H01L41/047 , H01L41/083
摘要： A piezoelectric driving device includes a vibration unit, a piezoelectric element, a signal transmission layer, and a plane unit. The piezoelectric element includes a first electrode and a second electrode electrically isolated from each other. The signal transmission layer includes a first conductive zone and a second conductive zone. The first electrode of the piezoelectric element is electrically connected to the first conductive zone of the signal transmission layer, and the second electrode of the piezoelectric element is electrically connected to the second conductive zone of the signal transmission layer. The plane unit has at least one hole. The piezoelectric element, the signal transmission layer, and the plane unit are located at one side of the vibration unit and are sequentially stacked together.
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公开(公告)号：US20200003321A1
公开(公告)日：2020-01-02
申请号：US16154735
申请日：2018-10-09
发明人： Xiaofeng Xu , Haiqiang Fu
摘要： The present invention discloses a movable valve core and an electromagnetic valve comprising the same. The movable valve core, comprising a cylindrical core body (1) defining a central axis, a leading head (2) fixed to the core body (1) removably, wherein a water-proof valve membrane (3) sandwiched between the core body (1) and the leading head (2), wherein a mounting hole (4) is axially formed in the core body (1), and a connector (5) for projecting into the mounting hole (4) extends axially from the bottom of the leading head (2), and the connector (5) is fixed into the mounting hole (4). The connector (5) is provided with an outer thread (6), and the leading head (2) is screwed into the mounting hole (4).
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公开(公告)号：US10393109B2
公开(公告)日：2019-08-27
申请号：US14855392
申请日：2015-09-16
发明人： Chung-Han Wu , Yu-Chang Yen
摘要： A piezoelectric pump includes a piezoelectric element, a vibrating piece, a valve and a flow guiding member. The vibrating piece has a central zone attached to the piezoelectric element, a peripheral zone, a first recess, a stopper and a position limiting wall both protruding from the first recess, and a through groove disposed between the central zone and the peripheral zone and connected through the first recess. The valve is attached to the peripheral zone and has a non-straight through slit. The flow guiding member is attached to the valve and has a second recess and a channel both recessed in the flow guiding member, and a through hole. The channel is connected through the second recess and the through hole. A projection of the second recess projected on the plane which the valve exists covers the non-straight through slit. An operating method of a piezoelectric pump is further provided.
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公开(公告)号：US20190201599A1
公开(公告)日：2019-07-04
申请号：US16212369
申请日：2018-12-06
IPC分类号： A61M1/00
CPC分类号： A61M1/0088 , A61M1/0035 , A61M2205/3331 , A61M2205/3337 , A61M2205/587 , A61M2205/75 , A61M2205/8206
摘要： The present invention relates to a negative pressure wound therapy device, system and method. The negative pressure wound therapy device is connected with a dressing, and comprises a housing, a control circuit board, a pump, and an aspiration conduit. The pump generates negative pressure. The pump may comprise a voltage-actuated deformation element (such as piezoelectric vibration element) to push fluid from an aspiration end to a discharge end. The aspiration conduit has a pump end and a dressing end. The pump end is fluidly connected to the aspiration end of the pump, and the dressing end is fluidly connected to the dressing used for covering a wound. The control circuit board is disposed in the housing, controls the pump to generate the negative pressure in the aspiration conduit, and applies negative pressure to the wound covered by the dressing via the aspiration conduit.
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公开(公告)号：US20190136846A1
公开(公告)日：2019-05-09
申请号：US15864086
申请日：2018-01-08
发明人： Chih Chang
摘要： A valve head structure and a diaphragm pump having the same are provided. The valve head structure includes a pump body, the pump body including a bonnet and a valve seat connected to each other, the valve seat is provided with a first connecting member; a diaphragm assembly mounted to an upper face of the valve seat, the diaphragm assembly including a plate body provided with a second connecting member fitted with the first connecting member; and a water outlet disc integrally formed on the plate body; a water inlet disc provided with a recessed face with a downwards opening, the water inlet disc being at least partly fitted closely with the recessed face, so as to open or close the water inlet opening.
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公开(公告)号：US10190578B2
公开(公告)日：2019-01-29
申请号：US14672247
申请日：2015-03-30
发明人： Kun-Lin Chang
摘要： A miniature pump includes a cylinder, a piston module, a driving module and a wall body. The cylinder has a first end and a second end opposite to each other along a direction. The piston module is accommodated in the cylinder. The piston module has at least one pumping chamber structure protruded towards the second end, and the pumping chamber structure is able to extend or retract along the direction. The driving module is located at the second end and connected to the pumping chamber structure, configured to drive the pumping chamber structure to extend or retract along the direction. The wall body at least partially surrounds a position of the pumping chamber structure near the first end, and is located between the cylinder and the pumping chamber structure.
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公开(公告)号：US20180320681A1
公开(公告)日：2018-11-08
申请号：US15782250
申请日：2017-10-12
发明人： Chih Chang
CPC分类号： F04B43/043 , F04B43/0054 , F04B53/16
摘要： A diaphragm pump including: a pump body including an upper cover, a valve seat and a cylinder body connected in sequence. The valve seat has a water inlet hole and a water outlet hole. The upper cover and the valve seat define a water inlet cavity and a water outlet cavity independent from each other. The water inlet hole communicates with the water inlet cavity while the water outlet hole communicates with the water outlet cavity. A mounting base is provided to a bottom of the water outlet cavity, and a plurality of spaced first position-limiting members are formed at a top of the water outlet cavity and extend downwards. A water inlet valve block is provided to a bottom surface of the valve seat to open or close the water inlet hole. A diaphragm assembly controls opening or closure of the water outlet hole.
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