CN104689441A - Noise reduction device of respirator fan - Google Patents
Noise reduction device of respirator fan Download PDFInfo
- Publication number
- CN104689441A CN104689441A CN201510129126.3A CN201510129126A CN104689441A CN 104689441 A CN104689441 A CN 104689441A CN 201510129126 A CN201510129126 A CN 201510129126A CN 104689441 A CN104689441 A CN 104689441A
- Authority
- CN
- China
- Prior art keywords
- fan
- flexible
- blower fan
- davit
- box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A noise reduction device of a respirator fan comprises a lower flexible cover (3), an upper flexible cover (5), a fan box bottom damping piece (2) and a fan box top damping piece (7). A fan bottom box (1) is provided with the fan box bottom damping piece (2), a fan top box (4) is provided with the fan box top damping piece (7), the fan box bottom damping piece (2) is provided with the lower flexible cover (3), the fan box top damping piece (7) is provided with the upper flexible cover (5), the lower flexible cover (3) and the upper flexible cover (5) are matched to form a closed cavity of a fan (8), the upper flexible cover (5) is provided with at least three hanging holes, each hanging hole is provided with a flexible hanging column (6) inside, the fan (8) is hung on the flexible hanging columns (6), and a snakelike closed air passage (3-1) is formed between the lower flexible cover (3) and the fan box bottom damping piece (2). With hanging and wrapping combined, the noise reduction device can greatly reduce transmission of air noise and fan noise.
Description
Technical field
The present invention relates to respirator field, be specifically related to a kind of respirator fan noise reduction device.
Background technology
Domestic sleep type respirator is mainly used among individual family, Sleeping Center and mini clinic, and mainly for the patient with apnea syndrome, in whole therapeutic process, patient is in sleep state, requires that surrounding enviroment are quiet, comfortable.Respirator pressurizes to the gas in pipeline by blower fan, and then therapeutical effect is played to patient, blower fan inevitably sends noise in the course of the work, how by noise control in minimum zone, do not affect patient's sleep be each respirator manufacturer will faced by key subjects.
Fan noise is mainly divided into two kinds, and one is blower fan quick rotation, the wind whistle that blade and windage produce, and a kind of vibrations being the reason such as blower fan own rotation and placement and causing, collide generation noise mutually with miscellaneous part in vibrations process.The former is much larger for the noise ratio that general the latter produces, and is main noise source.
In prior art, control for fan noise mainly contains three kinds: 1, be wrapping to by blower fan in the abundant box having deadener (generally using EVA material), but do deadener requirement higher like this, and the volume of box generally all can require larger, be unfavorable for the control of cost and the control of respirator volume, because home ventilator mainly uses with Sleeping Center within the family, conveniently, that generally can not do is too large.2, manufacture sound insulation environment by gas circuit structure, the method cost is low, but high to structural requirement, and general being difficult to realizes.3, increase rigid connecting components by the special protective treatment of increase and fix blower fan, reduce blower fan vibrations and reduce noise, but this scheme exists the problem of volume increase and cost increase equally.
CN202010337U discloses a kind of respirator regulation silencing shock-reduction device, and upper and lower two foams fasten, and be provided with blower fan holddown groove in foam, blower fan is fixed in the fastening space of upper and lower two foams by holddown groove.The vibration of blower fan can be delivered on foam equally, causes blower fan to resonate together with foam.
The CN103736186A of Changzhou Ke Mai Electronics Co., Ltd. discloses a kind of blower fan denoising structure, the fan body that surrounding is closely enclosed with ventilative soft layer is encapsulated in sealed compartment together, described sealed compartment surrounding and described ventilative soft layer close contact, described sealed compartment upper and lower is provided with air circulation room.The fan body of above-mentioned blower fan denoising structure is still by ventilative soft layer and sealed compartment close contact, and it is hardening that such time has been grown with ventilative soft layer, and the vibration of fan body can be delivered on ventilative soft layer and sealed compartment equally, causes resonance.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of respirator fan noise reduction device that really effectively can reduce blower fan two kinds of noise sources.
The present invention realizes like this, a kind of respirator fan noise reduction device, blower fan is arranged in the space of fan bottom box and the formation of blower fan top box by described denoising device, described denoising device comprises flexible lower cover, flexible upper cover, vibration damping sheet at the bottom of Fan Box and Fan Box top vibration damping sheet, fan bottom box is provided with vibration damping sheet at the bottom of described Fan Box, described Fan Box top vibration damping sheet is provided with at blower fan top box, vibration damping sheet at the bottom of Fan Box is provided with described flexible lower cover, described flexible upper cover is had at Fan Box top vibration damping sheet, described flexible lower cover and described flexible upper cover coordinate the enclosed cavity being formed and hold described blower fan, described flexibility covers and is provided with at least 3 suppending holes, flexible davit is provided with in each suppending hole, described blower fan is suspended on flexible davit.
Further, the bottom design of described flexible lower cover has snakelike air channel groove, at the bottom of described flexible lower cover and Fan Box, snakelike closed airway is formed between vibration damping sheet after assembling, take blower fan as initial point, air inlet is located at the sidewall bottom of the flexible lower cover of 90 degree of direction forwards, described snakelike closed airway at least through two bendings, is then upward through the top that described flexible lower cover enters described enclosed cavity, then drops to the fan air inlet bottom described blower fan from this air inlet.
Further, described snakelike closed airway is smooth curve, and described smooth curve has two protuberances and a recess at least.
Further, the blower fan gas outlet place of described blower fan is provided with connecting hose, and described connecting hose connects switching bend pipe, the air flue of described switching bend pipe connecting fan box outside.
Further, described flexible davit comprises davit body and is located at the flange of end of davit body, described davit body is provided with buckling groove, described flexible davit is suspended in the suppending hole of described flexible upper cover by flange, described blower fan has blocked hole, and described blower fan is fixedly connected with by the buckling groove of blocked hole with described flexible davit.
Further, the buckling groove of described davit body is thread groove, and described flexible davit coordinates fastening described blower fan further by flexible fastener nut with the buckling groove of davit body.
Further, EVA material is adopted to make at described flexible lower cover and flexible upper cover.
Further, described flexible davit comprises metal and adds bone strengthening, and described metal adds bone strengthening and described rubber, EVA material integrated injection molding.
Further, described blower fan has at least 3 blocked holes.
Above-mentioned denoising device of the present invention is the technical purpose being reached noise reduction by following technical conceive, distinctive " flexible parcel " cooperation " flexible suspension ", and suspension type is fitted to each other flexible upper and lower covers, effectively prevents the transmission of fan vibration; It is hang the sound insulation environment that assembling blower fan provides reinforcement within it that described flexible upper cover and flexible lower cover form enclosed cavity, flexible upper cover provides flexible support for hanging assembling again simultaneously, achieve the technique effect of better vibration damping, above-mentioned suspension and flexible parcel functionally mutually support, the total technique effect after this combination is more superior than the technique effect sum of independent " flexible parcel " and independent " flexible suspension ".
Simultaneously, wind is made an uproar and blower fan itself vibrates must solve the basic demand that just can reach denoising device simultaneously, above-mentioned technical conceive, except can greatly reduce except blower fan itself vibrates, also covers and devises snakelike air channel under flexibility, significantly reduces wind and makes an uproar and the transmission of fan noise.Snakelike closed airway is defined between vibration damping sheet, the wind whistle that effectively decay import and prevention fan blade and windage produce at the bottom of flexible lower cover and Fan Box; Simultaneously to drop to the fan air inlet bottom blower fan again through enclosed cavity top via the extraneous gas of snakelike closed airway, take the heat that blower fan produces to blower fan gas outlet at extraneous air through enclosed cavity, play the effect of lowering the temperature into blower fan.
Accompanying drawing explanation
Fig. 1 is the main sectional view of embodiment of the present invention respirator fan noise reduction device;
Fig. 2 is the snakelike closed channel schematic diagram of embodiment of the present invention respirator fan noise reduction device;
Fig. 3 is the B-B sectional view of Fig. 2 of embodiment of the present invention respirator fan noise reduction device.
Fig. 4 is that the flexible davit of embodiment of the present invention respirator fan noise reduction device hangs front view.
Fig. 5 is that the flexible davit of embodiment of the present invention respirator fan noise reduction device hangs top view.
Reference numeral in above-mentioned figure:
1 fan bottom box, vibration damping sheet at the bottom of 2 Fan Boxs, 3 flexible lower covers, the snakelike closing air flue of 3-1,4 blower fan top boxs, 5 flexible upper covers, 6 flexible davits, 7 Fan Box top vibration damping sheets, 8 blower fans, 9 connecting hoses, 10 switching bend pipes, 11 blower fan gas outlets, 12 fan air inlets, 13A air flue hole, F extraneous air
Detailed description of the invention
Following examples are used for the present invention is described, but are not used for limiting the scope of the invention.
As shown in Figure 1, a kind of respirator fan noise reduction device, described blower fan 8 is arranged in the enclosed space of fan bottom box 1 and blower fan top box 4 formation by described denoising device, described denoising device comprises flexible lower cover 3, flexible upper cover 5, vibration damping sheet 2 at the bottom of Fan Box and Fan Box top vibration damping sheet 7, fan bottom box 1 is provided with vibration damping sheet 2 at the bottom of described Fan Box, described Fan Box top vibration damping sheet 7 is provided with at blower fan top box 4, vibration damping sheet 2 at the bottom of Fan Box is provided with described flexible lower cover 3, described flexible upper cover 5 is had at Fan Box top vibration damping sheet 7, described flexible lower cover 3 and described flexible upper cover 5 coordinate the enclosed cavity being formed and hold blower fan 8, described flexible upper cover 5 is provided with at least 3 suppending holes, flexible davit 6 is provided with in each suppending hole, described flexible davit 6 comprises davit body and is located at the flange of end of davit body, described davit body is provided with buckling groove, described flexible davit 6 is suspended in the suppending hole of described flexible upper cover 5 by flange, described blower fan 8 has blocked hole, described blower fan is fixedly connected with by the buckling groove of blocked hole with described flexible davit.Described flexible lower cover 3 and flexible upper cover 5 adopt EVA material to make.Described flexible davit 6 adopts rubber, EVA material integrated injection molding, and preferably, described flexible davit 6 comprises metal and adds bone strengthening, and described metal adds bone strengthening and described rubber, EVA material integrated injection molding.Preferably, the buckling groove of described davit body is thread groove, and described flexible davit 6 comprises flexible fastener nut further, and described flexible fastener nut coordinates fastening described blower fan 8 with the buckling groove of davit body.
Preferably, as shown in Figure 3, in order to the position of fixing blower fan 8, blower fan has at least 3 described blocked holes, and can need to increase according to difference, and equally, flexible davit corresponding with it also can increase and reduce.
The technical conceive of above-mentioned denoising device is the technical purpose being reached noise reduction by " flexible parcel " cooperation " flexible suspension ", in Fan Box, described flexible upper cover 5 and flexible lower cover 3 form enclosed cavity parcel blower fan 8, EVA material damping soundproof effect is good, also can be absorbed by described denoising device immediately even if above-mentioned denoising device makes blower fan 8 there occurs dither wherein, greatly reduce the conduction of vibration, thus reduce the vibration noise of blower fan.In order to reduce the vibration of blower fan further, at least three fixed hole positions of blower fan use flexible davit 6, described property davit 6, through flexible upper cover 5, is fixed on its top by flange.Blower fan 8 by flexible davit 6 and flexible upper cover 5 achieve hang fixing simultaneously can damping, greatly reduce the noise because vibrations produce.
Except blower fan being hung and wraps up, also the long connecting hose 9 of one section of about 3cm will be provided with at the gas outlet place of blower fan, described connecting hose 9 connects switching bend pipe 10, the air flue of described switching bend pipe 10 connecting fan gas outlet and Fan Box outside, avoid producing noise because blower fan shakes when the blower fan gas outlet that causes and outer flue collide, as shown in Figure 1.
Except above-mentioned functions, flexible upper cover 5 and flexible lower cover 3 provide the function of ambient atmos and cooling for blower fan.As shown in Figure 2, the bottom of flexible lower cover 3 makes full use of spatial design snakelike air channel groove, at the bottom of flexible lower cover 3 and Fan Box, snakelike closed airway 3-1 is defined between vibration damping sheet 2 after assembling, take blower fan as initial point, air inlet is located at the sidewall bottom of the flexible lower cover 3 of 90 degree of direction forwards, described snakelike closing air flue 3-1 is from this air inlet, first 90 degree of direction negative sense craspedodrome 40-60mm again along 0 degree of direction forward direct movement 30-40mm again to 90 degree of direction forward direct movement 30-40mm, arrive the sidewall of described flexible lower cover 3 along 0 degree of direction forward direct movement 20-30mm again and do not penetrate, after the length of 90 degree of whole flexible lower cover 3 sidewalls of direction negative senses craspedodrome, be upward through the A pore road 13 of described snakelike closing air flue 3-1 end again and pass the top that described flexible lower cover 3 enters cavity, drop to the fan air inlet 12 bottom blower fan again, described snakelike closed airway 3-1 is at least through two bendings, preferably, described snakelike closed airway 3-1 is smooth curve, described smooth curve has two protuberances and a recess at least, path longer and the snakelike closed airway 3-1 of complications can decay effectively import and the wind whistle that stops fan blade and windage to produce, on the other hand, extraneous air F enters the snakelike closed airway 3-1 of vibration damping sheet 2 formation at the bottom of flexible lower cover 3 and Fan Box through air inlet, as shown in Figure 3, and then enters the top of cavity, drop to the fan air inlet bottom blower fan again, blow out via blower fan gas outlet 11.Take the heat that blower fan produces to blower fan gas outlet at extraneous air F through enclosed cavity, discharge Fan Box in the lump, play the effect into blower fan cooling.
The present invention has the design of following inventive technique: " flexible parcel " cooperation " flexible suspension " reaches the technical purpose of noise reduction, effectively prevents the transmission of fan vibration, described " flexible parcel " cooperation " flexible suspension ", suspension type is fitted to each other flexible upper and lower covers, effectively prevents the transmission of fan vibration, described flexible upper cover 5 and flexible lower cover 3 form enclosed cavity parcel blower fan 8, define the sound insulation environment of fan noise, fan suspended to reduce itself vibrates by flexible davit 6, above-mentioned suspension and flexible parcel functionally mutually support, therefore described flexible upper cover 5 and flexible lower cover 3 form enclosed cavity is hang the sound insulation environment that assembling blower fan provides reinforcement within it, flexible upper cover 5 provides flexible support for hanging assembling again simultaneously, achieve the technique effect of better vibration damping, total technique effect after this combination is more superior than the technique effect sum of independent flexibility parcel and independent flexible suspension.
Claims (9)
1. a respirator fan noise reduction device, blower fan (8) is arranged in the space that fan bottom box (1) and blower fan top box (4) formed by described denoising device, it is characterized in that, described denoising device comprises flexible lower cover (3), flexible upper cover (5), vibration damping sheet at the bottom of Fan Box (2) and Fan Box top vibration damping sheet (7), fan bottom box (1) is provided with vibration damping sheet (2) at the bottom of described Fan Box, described Fan Box top vibration damping sheet (7) is provided with at blower fan top box (4), vibration damping sheet (2) at the bottom of Fan Box is provided with described flexible lower cover (3), described flexible upper cover (5) is had on Fan Box top vibration damping sheet (7), described flexible lower cover (3) and described flexible upper cover (5) coordinate the enclosed cavity being formed and hold described blower fan (8), described flexible upper cover (5) is provided with at least 3 suppending holes, flexible davit (6) is provided with in each suppending hole, described blower fan (8) is suspended on flexible davit (6).
2. a kind of respirator fan noise reduction device according to claim 1, it is characterized in that, the bottom design of described flexible lower cover (3) has snakelike air channel groove, at the bottom of described flexible lower cover (3) and Fan Box, snakelike closed airway (3-1) is formed between vibration damping sheet (2) after assembling, take blower fan as initial point, air inlet is located at the sidewall bottom of the flexible lower cover (3) of 90 degree of direction forwards, described snakelike closed airway (3-1) from this air inlet at least through two bendings, then the top that described flexible lower cover (3) enters described enclosed cavity is upward through, drop to the fan air inlet (12) of described blower fan (8) bottom again.
3. a kind of respirator fan noise reduction device according to claim 2, is characterized in that, described snakelike closed airway (3-1) is smooth curve, and described smooth curve has two protuberances and a recess at least.
4. a kind of respirator fan noise reduction device according to claim 1, it is characterized in that, blower fan gas outlet (11) place of described blower fan (8) is provided with connecting hose (9), described connecting hose (9) connects switching bend pipe (10), the air flue of described switching bend pipe (10) connecting fan box outside.
5. a kind of respirator fan noise reduction device according to claim 1, it is characterized in that, described flexible davit (6) comprises davit body and is located at the flange of end of davit body, described davit body is provided with buckling groove, described flexible davit (6) is suspended in the suppending hole of described flexible upper cover (5) by flange, (8) have blocked hole with described blower fan, and described blower fan is fixedly connected with by the buckling groove of blocked hole with described flexible davit.
6. a kind of respirator fan noise reduction device according to claim 5, it is characterized in that, the buckling groove of described davit body is thread groove, and described flexible davit (6) coordinates fastening described blower fan (8) further by flexible fastener nut with the buckling groove of davit body.
7. a kind of respirator fan noise reduction device according to claim 1, is characterized in that, adopts EVA material to make described flexible lower cover (3) and flexible upper cover (5).
8. a kind of respirator fan noise reduction device according to claim 1, is characterized in that, described flexible davit (6) comprises metal and adds bone strengthening, and described metal adds bone strengthening and described rubber, EVA material integrated injection molding.
9. a kind of respirator fan noise reduction device according to claim 1, is characterized in that, described blower fan (8) has at least 3 blocked holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510129126.3A CN104689441B (en) | 2015-03-24 | 2015-03-24 | A kind of lung ventilator fan noise reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510129126.3A CN104689441B (en) | 2015-03-24 | 2015-03-24 | A kind of lung ventilator fan noise reduction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104689441A true CN104689441A (en) | 2015-06-10 |
| CN104689441B CN104689441B (en) | 2017-07-11 |
Family
ID=53337242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510129126.3A Expired - Fee Related CN104689441B (en) | 2015-03-24 | 2015-03-24 | A kind of lung ventilator fan noise reduction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104689441B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016150373A1 (en) * | 2015-03-24 | 2016-09-29 | 湖南明康中锦医疗科技发展有限公司 | Portable breathing machine |
| CN106139345A (en) * | 2016-07-28 | 2016-11-23 | 湖南明康中锦医疗科技发展有限公司 | A kind of turbine box and respirator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004112873A1 (en) * | 2003-06-20 | 2004-12-29 | Resmed Limited | Breathable gas apparatus with humidifier |
| US20050112013A1 (en) * | 2003-08-04 | 2005-05-26 | Pulmonetic Systems, Inc. | Method and apparatus for reducing noise in a roots-type blower |
| CN103736186A (en) * | 2013-12-13 | 2014-04-23 | 科迈（常州）电子有限公司 | Pipeline noise reduction structure for breathing machine |
| CN103906929A (en) * | 2011-08-05 | 2014-07-02 | 瑞思迈发动机及马达技术股份有限公司 | Blower |
| CN104132003A (en) * | 2014-07-30 | 2014-11-05 | 邵阳万脉科技有限公司 | Silencer of positive pressure ventilation equipment |
| CN204582200U (en) * | 2015-03-24 | 2015-08-26 | 湖南明康中锦医疗科技发展有限公司 | A kind of respirator fan noise reduction device |
-
2015
- 2015-03-24 CN CN201510129126.3A patent/CN104689441B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004112873A1 (en) * | 2003-06-20 | 2004-12-29 | Resmed Limited | Breathable gas apparatus with humidifier |
| US20050112013A1 (en) * | 2003-08-04 | 2005-05-26 | Pulmonetic Systems, Inc. | Method and apparatus for reducing noise in a roots-type blower |
| CN103906929A (en) * | 2011-08-05 | 2014-07-02 | 瑞思迈发动机及马达技术股份有限公司 | Blower |
| CN103736186A (en) * | 2013-12-13 | 2014-04-23 | 科迈（常州）电子有限公司 | Pipeline noise reduction structure for breathing machine |
| CN104132003A (en) * | 2014-07-30 | 2014-11-05 | 邵阳万脉科技有限公司 | Silencer of positive pressure ventilation equipment |
| CN204582200U (en) * | 2015-03-24 | 2015-08-26 | 湖南明康中锦医疗科技发展有限公司 | A kind of respirator fan noise reduction device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016150373A1 (en) * | 2015-03-24 | 2016-09-29 | 湖南明康中锦医疗科技发展有限公司 | Portable breathing machine |
| CN106139345A (en) * | 2016-07-28 | 2016-11-23 | 湖南明康中锦医疗科技发展有限公司 | A kind of turbine box and respirator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104689441B (en) | 2017-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204582200U (en) | A kind of respirator fan noise reduction device | |
| CN204678432U (en) | There is the hood device of refrigerating function | |
| CN104689442A (en) | Portable ventilator | |
| CN106089518B (en) | Ventilation pipe and aerating system | |
| CN207094857U (en) | Outdoor integral air conditioner | |
| CN104689441A (en) | Noise reduction device of respirator fan | |
| CN204563194U (en) | A kind of portable respirator | |
| CN205919600U (en) | Cold -stored refrigeration device | |
| CN104689443A (en) | Noise-reduction air passage structure of respirator fan | |
| CN204563191U (en) | A kind of respirator blower fan noise reduction air passage structure | |
| CN105736478B (en) | Blower sound insulation and noise reduction device | |
| CN106139345B (en) | A kind of turbine box and ventilator | |
| CN207094856U (en) | Outdoor integral air conditioner | |
| CN209261769U (en) | A kind of medical air compressor with noise reduction ventilating system | |
| CN205860531U (en) | Refrigerating plant | |
| CN109469600A (en) | A kind of medical air compressor with noise reduction ventilating system | |
| CN202010337U (en) | Noise-absorbing and vibration-absorbing device of breathing apparatus | |
| CN202092246U (en) | Sidewall overlapping type integrated noise elimination air treatment unit | |
| JP2012193934A (en) | Ventilation and air conditioning device for bathroom | |
| CN208682828U (en) | A kind of railway vehicle air conditioner pressure fan vibration and noise reducing device | |
| CN206789885U (en) | A kind of Jing Yin switch board | |
| CN109425030A (en) | Outdoor integral air conditioner | |
| CN220459538U (en) | Noiseless multifunctional neonate incubator | |
| CN107355973A (en) | Sound-proof material component and mobile air conditioner for mobile air conditioner | |
| CN216976214U (en) | Air duct capable of eliminating noise |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 410205 Room 101, 1st floor, north of superstar entrepreneurship base, No. 8 Lujing Road, high tech Development Zone, Changsha, Hunan Patentee after: Hunan Mingkang Zhongjin Medical Technology Co.,Ltd. Address before: 410125 North first floor, superstar entrepreneurship base, No. 8 Lujing Road, Changsha City, Hunan Province Patentee before: HUNAN MICOME ZHONGJIN MEDICAL SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170711 |