CN109707604A - A kind of double oscillator low noise compressors - Google Patents
A kind of double oscillator low noise compressors Download PDFInfo
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- CN109707604A CN109707604A CN201910103425.8A CN201910103425A CN109707604A CN 109707604 A CN109707604 A CN 109707604A CN 201910103425 A CN201910103425 A CN 201910103425A CN 109707604 A CN109707604 A CN 109707604A
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- valve seat
- oscillator
- connect
- cover board
- shell
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- 239000012528 membrane Substances 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention relates to a kind of double oscillator low noise compressors, including lower casing, middle shell and upper casing, the lower casing is connect with the middle shell, the middle shell is connect with the upper casing, the middle shell includes two oscillator units, each oscillator unit includes valve seat one, valve seat cover board one, oscillator, valve seat cover board two and valve seat two, the valve seat one is connect with the valve seat cover board one, the valve seat cover board one is connect with the oscillator, the oscillator is connect with the valve seat cover board two, the valve seat cover board two is connect with the valve seat two, and two oscillator units are symmetrical, the valve seat cover board one includes valve seat front cover, outer center reinforced sheet, interior center reinforced sheet and flat membrane.Double oscillator low noise compressors are designed using double oscillator units, are realized dynamic balancing when oscillator unit work, are reduced vibrating noise when compressor operating.
Description
Technical field
The present invention relates to a kind of double oscillator low noise compressors.
Background technique
Compressor is a kind of components being widely used in medical air pump, and linear osccilation compressor currently on the market is big
It is mostly all the design of simple oscialltor, simple oscialltor compresses basin shape diaphragm using the oscillator vibrated back and forth at work, to reach inflation
Purpose.But simple oscialltor can not offset the inertia of oscillator always at work, when movement of pendulum is to away from far point maximum distance
Quick counter motion is wanted, noise is big when this results in compressor operating, the meeting when using in ward in medical air pump
Very big noise is generated, user's rest is seriously affected, causes customer complaint.
In addition, the air inlet and air outlet bore of the compressor of existing production is identical, but air inlet only one, outlet
Mouth but there are two, if disengaging tolerance it is identical, air inlet stream speed is twice of gas outlet speed, and gas velocity is spent
Greatly, the pneumatic noise generated when flowing through stomata is bigger, also bigger to the impact of intake valve, and the energy of valve block slap is also bigger, makes an uproar
Sound is bigger.
Summary of the invention
The shortcomings that in view of the above prior art, the purpose of the present invention is to provide a kind of double oscillator low noise compressors, should
Compressor reduces noise when compressor operating using the working method of double oscillators.
In order to achieve the above objects and other related objects, the present invention provides a kind of double oscillator low noise compressors, including
Lower casing, middle shell and upper casing, the lower casing are connect with the middle shell, and the lower casing is used to subtract with the middle hull shape at confined space
Few noise, the middle shell are connect with the upper casing, and the middle shell is used for compressed air, and the upper casing is used to seal the middle shell,
A confined space is formed, environmental noise is reduced, and prevent dust from falling into the middle shell, reduces the service life of the compressor, institute
Stating middle shell includes two oscillator units, and each oscillator unit includes valve seat one, valve seat cover board one, oscillator, valve seat cover board two
With valve seat two, the valve seat one is connect with the valve seat cover board one, and the valve seat one is used to fix the flat membrane and provides gas source,
The valve seat cover board one is connect with the oscillator, and the valve seat cover board one is for generating compressed air, the oscillator and the valve
Flap plate two connects, and the oscillator is for driving the valve seat cover board one and the valve seat cover board two to do reciprocal utilization, the valve
Flap plate two is connect with the valve seat two, and the valve seat two is used to fix the flat membrane and generates compressed air, and described in two
Oscillator unit is symmetrical, and the valve seat cover board one includes valve seat front cover, outer center reinforced sheet, interior center reinforced sheet and flat membrane,
The oscillator is connect with the valve seat front cover, and the valve seat front cover is connect with the outer center reinforced sheet, and the valve seat front cover is used
In the fixation flat membrane, the outer center reinforced sheet is connect with the flat membrane, and the flat membrane is connect with the interior center reinforced sheet,
The flat membrane is used for compressed air, and the outer center reinforced sheet and the interior center reinforced sheet are used to increase the machinery of the flat membrane
Intensity, and the flat membrane is connect with the valve seat one or the valve seat two, and the valve seat cover board one and the valve seat cover board
Two structures are identical.
Preferably, the oscillator further includes iron core, coil, permanent magnet, oscillator shell and oscillator cover board, the iron core and institute
Coil connection is stated, the coil is adjacent with the oscillator shell but does not contact, and the iron core and the coil are described for driving
Permanent magnet moves back and forth, and the oscillator shell is connect with the permanent magnet, and the oscillator shell is for loading the permanent magnet, institute
It states permanent magnet to connect with the oscillator cover board, the permanent magnet is used for the magnetism of induction coil, and then moves back and forth, the vibration
Sub- cover board is adjacent with the coil but does not contact, and the oscillator cover board is for protecting the permanent magnet.
Preferably, two oscillator units are located on the same line, for offsetting two oscillator unit movements
When the inertia that generates, prevent the vibration of compressor.
Preferably, the valve seat one and the valve seat two further include air inlet and venthole, and the air inlet is located at described
One end far from the oscillator shell of valve seat one and the valve seat two, the venthole are located at the valve seat one and the valve seat
Two bottom, and the air inlet is identical with the quantity of the venthole, the air inlet is for allowing gas to enter the valve seat
One and the valve seat two, the venthole is for allowing compressed air to flow out.
Preferably, oscillator shell both ends are equipped with connector, and the valve seat cover board one and valve seat cover board two, which are equipped with, to be connected
Connect hole, the connecting hole is connect with the connector, the connector and the connecting hole for connect the oscillator shell and
The outer center reinforced sheet.
It preferably, further include mute sealing ring and rubber gasket, the mute sealing ring is located at the upper casing and described
Between middle shell, the mute sealing ring is used to prevent the sound of the middle shell movement from passing in environment, the rubber gasket position
Between the middle shell and the lower casing.
Preferably, the oscillator shell is equipped with reinforced sheet connecting hole, and the reinforced sheet connecting hole is described flat for connecting
Film and the oscillator shell.
It preferably, further include reinforced sheet connection bolt, the reinforced sheet connection bolt passes through the interior center according to this and reinforces
Piece, flat membrane, valve seat front cover and outer center reinforced sheet, and with the oscillator cage connection, reinforced sheet connection bolt is for connecting
Connect the valve seat cover board and the oscillator shell and the valve seat cover board two and the oscillator shell.
Preferably, the air inlet is unidirectional hole, is only allowed gas into, and the venthole is also unidirectional hole, is only permitted
Perhaps gas flows out.
When the single oscillator unit work of the compressor, coil, which is powered, generates magnetic field, and magnetic field pushes permanent magnet to move back and forth,
Oscillator shell moves reciprocatingly at this time, if oscillator shell moves to the left, the flat membrane compression in left side, air pass through valve seat two at this time
Venthole outflow, form compressed air, the flat membrane on right side heaves, and air enters valve seat one from the air inlet of valve seat one, then
Oscillator shell moves right, and the flat membrane compression on right side, air is flowed out by the venthole of valve seat one, forms compressed air, left side
Flat membrane heave, air enters valve seat two from the air inlet of valve seat two, repeats according to this.When the compressor operating, two oscillator lists
Member works at the same time, the oscillator shell direction of motion on the contrary, counteract the inertia of compressor entirety, reduce compressor vibratility and
Noise；Diplopore air inlet and diplopore outlet simultaneously reduce noise when air-flow flowing.
In conclusion the compressor has the advantages that diplopore designs so that air inlet when disengaging tolerance is identical
Mouth air-flow velocity reduces, and reduces the noise generated when air-flow flows through, reduces the impact to valve block, is further reduced valve block slap and makes an uproar
Sound；The design of outer center reinforced sheet and interior center reinforced sheet is greatly improved the torsional rigidity of flat membrane, provides for oscillator shell
Support, makes oscillator shell be difficult to the failure that twists, increases the service life of the compressor；It is designed, is realized using double oscillators
Dynamic balancing reduces vibrating noise when compressor operating.
Detailed description of the invention
Fig. 1 is compressor overall structure diagram.
Fig. 2 is compression schematic diagram of internal structure.
Fig. 3 is oscillator unit structural schematic diagram.
Fig. 4 is oscillator unit partial structure diagram, for showing reinforced sheet connecting hole and connector.
Fig. 5 is the front view and bottom view of valve seat, for showing air inlet and venthole.
1, lower casing；2, middle shell；3, upper casing；4, oscillator unit；5, valve seat one；6, valve seat cover board one；7, oscillator；8, valve seat lid
Plate two；9, valve seat two；10, valve seat front cover；11, outer center reinforced sheet；12, interior center reinforced sheet；13, flat membrane；14, iron core；15,
Coil；16, permanent magnet；17, oscillator shell；18, oscillator cover board；19, air inlet；20, venthole；21, connector；22, it connects
Hole；23, mute sealing ring；24, rubber gasket；25, reinforced sheet connecting hole；26, reinforced sheet connects bolt.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
Fig. 1 is please referred to Fig. 5.It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to
Cooperate the revealed content of specification, so that those skilled in the art understands and reads, being not intended to limit the invention can be real
The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where not influencing the effect of present invention can be generated and the purpose that can reach, it should all still fall in disclosed skill
Art content obtains in the range of capable of covering.Meanwhile in this specification it is cited as "upper", "lower", "left", "right", " centre " and
The term of " one " etc. is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, relativeness
It is altered or modified, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
As shown in Figures 1 to 5, the present invention provides the present invention provides a kind of double oscillator low noises to compress for present invention design
Machine, including lower casing 1, middle shell 2 and upper casing 3, the lower casing 1 are connect with the middle shell 2, and the lower casing 1 is used for and middle 2 shape of shell
At confined space, noise is reduced, the middle shell 2 is connect with the upper casing 3, and the middle shell 2 is used for compressed air, the upper casing 3
For sealing the middle shell 2, a confined space is formed, reduces environmental noise, and prevent dust from falling into the middle shell 2, is dropped
The service life of the low compressor, the middle shell 2 include two oscillator units 4, and each oscillator unit 4 includes valve seat 1, valve seat
Cover board 1, oscillator 7, valve seat cover board 28 and valve seat 29, the valve seat 1 are connect with the valve seat cover board 1, the valve seat
One 5 for fixing the flat membrane 13 and providing gas source, and the valve seat cover board 1 is connect with the oscillator 7, the valve seat cover board one
6 for generating compressed air, and the oscillator 7 is connect with the valve seat cover board 28, and the oscillator 7 is for driving the valve seat lid
Plate 1 and the valve seat cover board 28 do reciprocal utilization, and the valve seat cover board 28 is connect with the valve seat 29, the valve seat 29
For fixing the flat membrane 13 and generating compressed air, and two oscillator units 4 are symmetrical, the valve seat cover board 1
Including valve seat front cover 10, outer center reinforced sheet 11, interior center reinforced sheet 12 and flat membrane 13, the oscillator 7 and the valve seat front cover
10 connections, the valve seat front cover 10 are connect with the outer center reinforced sheet 11, and the valve seat front cover 10 is for fixing the flat membrane
13, the outer center reinforced sheet 11 is connect with the flat membrane 13, and the flat membrane 13 is connect with the interior center reinforced sheet 12, described
Flat membrane 13 is used for compressed air, the outer center reinforced sheet 11 and the interior center reinforced sheet 12 for increasing the flat membrane 13
Mechanical strength, and the flat membrane 13 is connect with the valve seat 1 or the valve seat 29, and the valve seat cover board 1 with it is described
28 structure of valve seat cover board is identical.
In the present embodiment, the oscillator further includes iron core 14, coil 15, permanent magnet 16, oscillator shell 17 and oscillator lid
Plate 18, the iron core 14 are connect with the coil 15, and the coil 15 is adjacent with the oscillator shell 17 but does not contact, described
For driving the permanent magnet 16 to move back and forth, the oscillator shell 17 connects with the permanent magnet 16 for iron core 14 and the coil 15
It connects, for loading the permanent magnet 16, the permanent magnet 16 is connect the oscillator shell 17 with the oscillator cover board 18, described
Permanent magnet 16 is used for the magnetism of induction coil, and then moves back and forth, and the oscillator cover board 18 is adjacent with the coil 15 but not
Contact, the oscillator cover board 18 is for protecting the permanent magnet 16.
In the present embodiment, two oscillator units 4 are located on the same line, for offsetting two oscillator lists
The inertia that member 4 generates when moving, prevents the vibration of compressor.
In the present embodiment, the valve seat 1 and the valve seat 29 further include air inlet 19 and venthole 20, it is described into
Stomata 19 is located at one end far from the oscillator shell 17 of the valve seat 1 and the valve seat 29, and the venthole 20 is located at
The bottom of the valve seat 1 and the valve seat 29, and the air inlet 19 is identical with the quantity of the venthole 20, it is described into
Stomata 19 is for allowing gas to enter the valve seat 1 and the valve seat 29, and the venthole 20 is for allowing compressed air stream
Out.
In the present embodiment, 17 both ends of oscillator shell are equipped with connector 21, the valve seat cover board 1 and valve seat cover board
28 are equipped with connecting hole 22, and the connecting hole 22 is connect with the connector 21, and the connector 21 and the connecting hole 22 are used
In the connection oscillator shell 17 and the outer center reinforced sheet 11.
It in the present embodiment, further include mute sealing ring 23 and rubber gasket 24, the mute sealing ring 23 is located at institute
It states between upper casing 3 and the middle shell 2, the sound that the mute sealing ring 23 is used to prevent the middle shell 2 from moving passes in environment,
The rubber gasket 24 is between the middle shell 2 and the lower casing 1, and the rubber gasket 24 is for sealing the middle shell
2 and the lower casing 1.
In the present embodiment, the oscillator shell 17 is equipped with reinforced sheet connecting hole 25, and the reinforced sheet connecting hole 25 is used
In the connection flat membrane 13 and the oscillator shell 17.
It in the present embodiment, further include reinforced sheet connection bolt 26, the reinforced sheet connection bolt 26 passes through described according to this
Interior center reinforced sheet 12, flat membrane 13, valve seat front cover 10 and outer center reinforced sheet 11, and connect with the oscillator shell 17, it is described
Reinforced sheet connection bolt 26 is for connecting the valve seat cover board 1 and the oscillator shell 17 and 28 He of valve seat cover board
The oscillator shell 17.
In the present embodiment, the air inlet 19 is unidirectional hole, is only allowed gas into, and the venthole 20 is also
Unidirectional hole only allows gas to flow out.
When the single oscillator unit 4 of the compressor works, coil 15, which is powered, generates magnetic field, and magnetic field pushes permanent magnet 16 reciprocal
Movement, oscillator shell 17 moves reciprocatingly at this time, if oscillator shell 17 moves to the left, the flat membrane 13 in left side is compressed at this time, empty
Gas is flowed out by the venthole 20 of valve seat 29, forms compressed air, and the flat membrane 13 on right side is heaved, air inlet of the air from valve seat 1
Hole 19 enters valve seat 1, and then oscillator shell 17 moves right, and the flat membrane 13 on right side is compressed, and air is gone out by valve seat 1
Stomata 20 flows out, and forms compressed air, and the flat membrane 13 in left side is heaved, and air enters valve seat 29 from the air inlet 19 of valve seat 29,
It repeats according to this.When the compressor operating, two oscillator units 4 are worked at the same time, and 17 direction of motion of oscillator shell is on the contrary, counteract pressure
The inertia of contracting machine entirety, reduces the vibratility and noise of compressor；Diplopore air inlet and diplopore outlet simultaneously, reduce air-flow stream
Noise when dynamic.
As described above, the compressor has the advantages that diplopore designs so that air inlet when disengaging tolerance is identical
Mouth air-flow velocity reduces, and reduces the noise generated when air-flow flows through, reduces the impact to valve block, is further reduced valve block slap and makes an uproar
Sound；The design of outer center reinforced sheet and interior center reinforced sheet is greatly improved the torsional rigidity of flat membrane, provides for oscillator shell
Support, makes oscillator shell be difficult to the failure that twists, increases the service life of the compressor；It is designed, is realized using double oscillators
Dynamic balancing reduces vibrating noise when compressor operating.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (9)
1. a kind of double oscillator low noise compressors, it is characterised in that: including lower casing, middle shell and upper casing, the lower casing and it is described in
Shell connection, the middle shell are connect with the upper casing, and the middle shell includes two oscillator units, and each oscillator unit includes valve
Seat one, valve seat cover board one, oscillator, valve seat cover board two and valve seat two, the valve seat one are connect with the valve seat cover board one, the valve
Flap plate one is connect with the oscillator, and the oscillator is connect with the valve seat cover board two, the valve seat cover board two and the valve seat
Two connections, and two oscillator units are symmetrical, and the valve seat cover board one includes valve seat front cover, outer center reinforced sheet, interior
Center reinforced sheet and flat membrane, the oscillator are connect with the valve seat front cover, and the valve seat front cover and the outer center reinforced sheet connect
Connect, the outer center reinforced sheet is connect with the flat membrane, and the flat membrane is connect with the interior center reinforced sheet, and the flat membrane with
The valve seat one or the valve seat two connect, and the valve seat cover board one is identical as two structure of valve seat cover board.
2. a kind of double oscillator low noise compressors according to claim 1, it is characterised in that: the oscillator further includes iron
Core, coil, permanent magnet, oscillator shell and oscillator cover board, the iron core are connect with the coil, outside the coil and the oscillator
Shell phase is adjacent but does not contact, and the oscillator shell is connect with the permanent magnet, and the permanent magnet is connect with the oscillator cover board, described
Oscillator cover board is adjacent with the coil but does not contact, and the coil is connect with the iron core.
3. a kind of double oscillator low noise compressors according to claim 1, it is characterised in that: two oscillator unit positions
In on same straight line.
4. a kind of double oscillator low noise compressors according to claim 1, it is characterised in that: the valve seat one and the valve
Seat two further includes air inlet and venthole, and the air inlet is located at outside the separate oscillator of the valve seat one and the valve seat two
One end of shell, the venthole are located at the bottom of the valve seat one and the valve seat two, and the air inlet and the venthole
Quantity it is identical.
5. a kind of double oscillator low noise compressors according to claim 1, it is characterised in that: oscillator shell both ends are set
There is connector, the valve seat cover board one and valve seat cover board two are equipped with connecting hole, and the connecting hole is connect with the connector.
6. a kind of double oscillator low noise compressors according to claim 1, it is characterised in that: further include mute sealing ring and
Rubber gasket, between the upper casing and the middle shell, the rubber gasket is located in described the mute sealing ring
Between shell and the lower casing.
7. a kind of double oscillator low noise compressors according to claim 1, it is characterised in that: the oscillator shell is equipped with
Reinforced sheet connecting hole.
8. a kind of double oscillator low noise compressors according to claim 1, it is characterised in that: further include reinforced sheet connection spiral shell
Bolt, the reinforced sheet connection bolt pass through the interior center reinforced sheet, flat membrane, valve seat front cover and outer center reinforced sheet according to this, and
With the oscillator cage connection.
9. a kind of double oscillator low noise compressors according to claim 4, it is characterised in that: the air inlet is unidirectional
Hole, and the venthole is also unidirectional hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910103425.8A CN109707604A (en) | 2019-02-01 | 2019-02-01 | A kind of double oscillator low noise compressors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910103425.8A CN109707604A (en) | 2019-02-01 | 2019-02-01 | A kind of double oscillator low noise compressors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109707604A true CN109707604A (en) | 2019-05-03 |
Family
ID=66264218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910103425.8A Pending CN109707604A (en) | 2019-02-01 | 2019-02-01 | A kind of double oscillator low noise compressors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109707604A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW463879U (en) * | 2001-01-19 | 2001-11-11 | Meiko Pet Corp | Improved muffling structure of air pump |
| JP2003239867A (en) * | 2001-12-14 | 2003-08-27 | Techno Takatsuki Co Ltd | Electromagnetic vibration type diaphragm pump |
| CN103417265A (en) * | 2012-05-15 | 2013-12-04 | 精工爱普生株式会社 | Medical apparatus |
| CN203614187U (en) * | 2013-12-24 | 2014-05-28 | 湖北京汉动力科技有限公司 | Device for exhausting, removing smoke, reducing temperature and eliminating sound of diesel generator set |
| CN104457009A (en) * | 2014-11-27 | 2015-03-25 | 中科力函（深圳）低温技术有限公司 | Low-temperature pulse tube refrigerator adopting mixed structure |
| CN107355367A (en) * | 2017-09-07 | 2017-11-17 | 绵阳富临精工机械股份有限公司 | A kind of electronic vacuum pump with check valve |
| CN107614875A (en) * | 2015-06-11 | 2018-01-19 | 株式会社村田制作所 | Pump |
| TWM573380U (en) * | 2018-10-26 | 2019-01-21 | 亞杰開發有限公司 | Muzzling exhaust pipe |
| CN209800218U (en) * | 2019-02-01 | 2019-12-17 | 安玖医疗器械(苏州)有限公司 | Double-vibrator low-noise compressor |
-
2019
- 2019-02-01 CN CN201910103425.8A patent/CN109707604A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW463879U (en) * | 2001-01-19 | 2001-11-11 | Meiko Pet Corp | Improved muffling structure of air pump |
| JP2003239867A (en) * | 2001-12-14 | 2003-08-27 | Techno Takatsuki Co Ltd | Electromagnetic vibration type diaphragm pump |
| CN103417265A (en) * | 2012-05-15 | 2013-12-04 | 精工爱普生株式会社 | Medical apparatus |
| CN203614187U (en) * | 2013-12-24 | 2014-05-28 | 湖北京汉动力科技有限公司 | Device for exhausting, removing smoke, reducing temperature and eliminating sound of diesel generator set |
| CN104457009A (en) * | 2014-11-27 | 2015-03-25 | 中科力函（深圳）低温技术有限公司 | Low-temperature pulse tube refrigerator adopting mixed structure |
| CN107614875A (en) * | 2015-06-11 | 2018-01-19 | 株式会社村田制作所 | Pump |
| CN107355367A (en) * | 2017-09-07 | 2017-11-17 | 绵阳富临精工机械股份有限公司 | A kind of electronic vacuum pump with check valve |
| TWM573380U (en) * | 2018-10-26 | 2019-01-21 | 亞杰開發有限公司 | Muzzling exhaust pipe |
| CN209800218U (en) * | 2019-02-01 | 2019-12-17 | 安玖医疗器械(苏州)有限公司 | Double-vibrator low-noise compressor |
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| CB02 | Change of applicant information |
Address after: 215024 No. 158 Fangzhou Road, Suzhou Industrial Park, Suzhou City, Jiangsu Province Applicant after: Anjiu Medical Devices (Suzhou) Co., Ltd. Address before: 215024 Fangzhou Road 158, Suzhou Industrial Park, Jiangsu Province Applicant before: Jie Ding medical instruments (Suzhou) Co., Ltd. |
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| CB02 | Change of applicant information |