CN210427344U - Novel structure of NDIR gas sensor - Google Patents
Novel structure of NDIR gas sensor Download PDFInfo
- Publication number
- CN210427344U CN210427344U CN201920263033.3U CN201920263033U CN210427344U CN 210427344 U CN210427344 U CN 210427344U CN 201920263033 U CN201920263033 U CN 201920263033U CN 210427344 U CN210427344 U CN 210427344U
- Authority
- CN
- China
- Prior art keywords
- light source
- mounting hole
- sensor
- seat
- detector
- 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.)
- Expired - Fee Related
Links
- 238000001745 non-dispersive infrared spectroscopy Methods 0.000 title claims abstract 12
- 238000007789 sealing Methods 0.000 claims description 11
- 239000000428 dust Substances 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract 7
- UFNIBRDIUNVOMX-UHFFFAOYSA-N 2,4'-dichlorobiphenyl Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC=C1Cl UFNIBRDIUNVOMX-UHFFFAOYSA-N 0.000 description 4
- KKQWHYGECTYFIA-UHFFFAOYSA-N 2,5-dichlorobiphenyl Chemical compound ClC1=CC=C(Cl)C(C=2C=CC=CC=2)=C1 KKQWHYGECTYFIA-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model relates to a novel structure of NDIR gas sensor, which comprises a light source seat, a sensor seat, a gas pipe and a plurality of connecting pieces, wherein the light source seat is provided with a first mounting hole and a light source mounting hole communicated with the first mounting hole, and the sensor seat is provided with a second mounting hole and a detector mounting hole communicated with the second mounting hole; two ends of the gas pipe are respectively inserted into the first mounting hole and the second mounting hole; a light source for emitting light rays into the gas pipe is arranged in the light source mounting hole, and a detector is arranged in the detector mounting hole; the surface of the light source seat is provided with an air inlet, and the surface of the sensor seat is provided with an air outlet; the light source seat and the sensor seat are respectively provided with a connecting unit which is detachably connected with the connecting piece; the light source seat and the sensor seat are detachably connected with the gas pipe, so that gases with different concentrations can be tested by replacing the gas pipes with different lengths.
Description
Technical Field
The utility model relates to a sensor technical field, more specifically say, relate to a new-type structure of NDIR gas sensor.
Background
A non-dispersive infrared (NDIR) gas sensor uses a broad-spectrum light source as the light source of the infrared sensor, and light passes through the gas to be detected in the light path, passes through a narrow-band filter and reaches an infrared detector. The working principle of the gas sensing device is that the absorption characteristics are selected based on the near infrared spectra of different gas molecules, and the gas components are identified and the concentration of the gas components is determined by utilizing the relation (Lambert-Beer law) between the gas concentration and the absorption intensity. The optical sensor mainly comprises an infrared light source, a light path, an infrared detector, a circuit and a software algorithm, and is mainly used for detecting compounds, such as: CH4, CO2, C2H2, NO2, CO, SO2, NH3, ethanol, benzene, etc., and contains most organics.
Generally, the measuring range of the detector module with a longer gas tube is generally smaller; the measuring range of the detector module with a short gas tube is generally large; the structure of current NDIR gas sensor is mostly full aluminium structure, rectangular shape, though simple structure, but the processing degree of difficulty is big, and is with high costs, the cycle length. The gas tube length is limited because of the integral aluminum process.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to prior art's above-mentioned defect, provide a new-type structure of NDIR gas sensor.
The utility model provides a technical scheme that its technical problem adopted is:
constructing a novel structure of an NDIR gas sensor, which comprises a light source seat, a sensor seat, a gas pipe and a plurality of connecting pieces, wherein the light source seat is provided with a first mounting hole and a light source mounting hole communicated with the first mounting hole, and the sensor seat is provided with a second mounting hole and a detector mounting hole communicated with the second mounting hole; the two ends of the gas pipe are respectively inserted into the first mounting hole and the second mounting hole, a first inner flange for limiting the gas pipe is arranged in the first mounting hole, and a second inner flange for limiting the gas pipe is arranged in the second mounting hole; a light source for emitting light rays into the gas pipe is arranged in the light source mounting hole, and a detector is arranged in the detector mounting hole; the surface of the light source seat is provided with an air inlet hole for introducing air to a position between the light source and the gas pipe; the surface of the sensor seat is provided with an exhaust hole for exhausting gas between the detector and the gas pipe; and the light source seat and the sensor seat are respectively provided with a connecting unit which is detachably connected with the connecting piece.
The novel structure of the NDIR gas sensor of the utility model is characterized in that the connecting piece comprises a stud bolt, a cylindrical nut and a countersunk head bolt; one of the light source seat and the sensor seat is provided with a screw hole in threaded connection with the stud bolt, and the other of the light source seat and the sensor seat is provided with a through hole matched with the stud bolt.
NDIR gas sensor new-type structure, wherein, stud with cylinder nut's one end threaded connection, cylinder nut's the other end with countersunk head bolt threaded connection.
NDIR gas sensor new-type structure, wherein, first mounting hole with all be equipped with one or more ring channels on the second mounting hole inner wall, be equipped with in the ring channel and seal the o type sealing washer of gas pipe.
NDIR gas sensor new-type structure, wherein, the parcel has light source shell on the light source, the cover is equipped with first sealing washer on the light source shell, the parcel has sensor housing on the detector, the cover is equipped with the second sealing washer on the sensor housing.
The novel structure of the NDIR gas sensor of the utility model also comprises an installation bottom plate, wherein the light source seat and the sensor seat are both installed on the installation bottom plate; the light source is provided with a lens, the light source mounting hole is communicated with the surface of the light source seat, and the detector mounting hole is communicated with the surface of the sensor seat.
The novel structure of the NDIR gas sensor is characterized in that a first PCB board covering the detector mounting hole and a second PCB board perpendicular to and electrically connected with the first PCB board are arranged on the mounting bottom plate; the first PCB is electrically connected with the pins on the detector, the light source is connected with a light source connector through a wire, and the second PCB is provided with an external interface for an external power supply and output data and a light source interface electrically connected with the light source connector.
NDIR gas sensor new-type structure, wherein, be equipped with the PCB board shield of L type on the mounting plate, PCB board shield includes the longitudinal part, and covers the horizontal part of first PCB board, be equipped with in the longitudinal part with second PCB board complex opening, and hold the folded plate of connecting piece, be equipped with the light source shield that covers the light source mounting hole on the light source seat, be equipped with the confession on the light source seat rear side the light source with second PCB board electric connection cross the wire casing.
New-type structure of NDIR gas sensor, wherein, mounting plate PCB board shield with the material of light source shield is abs plastics, resin or ya keli.
New-type structure of NDIR gas sensor, wherein, gas pipe internal surface polishing becomes glossy mirror surface, the light source seat with the material of sensor seat is stainless steel, aluminium or copper.
The beneficial effects of the utility model reside in that: when the gas concentration is tested, the tested gas is input into the gas source base from the gas inlet hole, enters the gas pipe through the light source mounting hole, and is exhausted from the exhaust hole through the detector mounting hole, and in the process, light emitted by the light source penetrates through the tested gas in the gas pipe and reaches the detector; during assembly, the light source and the detector are respectively arranged in the light source mounting hole and the detector mounting hole, then the two ends of the gas tube are respectively inserted into the first mounting hole and the second mounting hole, and finally the light source seat and the sensor seat are connected together through the connecting piece, so that the processing is simple and convenient; the gas pipe can be taken out only by detaching the connecting piece, so that the gas pipe with different lengths can be replaced according to different requirements.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts according to the drawings:
FIG. 1 is a schematic cross-sectional view of a novel structure of an NDIR gas sensor in accordance with a preferred embodiment of the present invention;
FIG. 2 is a schematic structural view of a novel structure of an NDIR gas sensor according to a preferred embodiment of the present invention;
fig. 3 is a rear view of the new NDIR gas sensor structure without a dust cap according to the preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, belong to the scope of protection of the present invention.
The new structure of NDIR gas sensor of the preferred embodiment of the present invention is shown in fig. 1, referring to fig. 2-3, including light source base 1, sensor base 2, gas pipe 3 and several connecting pieces 4, light source base 1 is provided with first mounting hole 11 and light source mounting hole 12 communicated with first mounting hole 11, sensor base 2 is provided with second mounting hole 21, and detector mounting hole 22 communicated with second mounting hole 21; two ends of the gas pipe 3 are respectively inserted into the first mounting hole 11 and the second mounting hole 21, a first inner flange 13 for limiting the gas pipe 3 is arranged in the first mounting hole 11, and a second inner flange 23 for limiting the gas pipe 3 is arranged in the second mounting hole 21; a light source 14 for emitting light into the gas tube 3 is arranged in the light source mounting hole 12, and a detector 24 is arranged in the detector mounting hole 22; the surface of the light source seat 1 is provided with an air inlet hole 15 for introducing air to the position between the light source 14 and the air pipe 3; the surface of the sensor seat 2 is provided with an exhaust hole 25 for exhausting gas between the detector 24 and the gas pipe 3; the light source seat 1 and the sensor seat 2 are both provided with a connecting unit 5 which is detachably connected with the connecting piece 4; when the gas concentration is tested, the tested gas is input into the gas source base 1 from the gas inlet hole 15, enters the gas pipe 3 through the light source mounting hole 12, and is exhausted from the exhaust hole 25 through the detector mounting hole 22, and in the process, the light emitted by the light source 14 passes through the tested gas in the gas pipe 3 and reaches the detector 24; during assembly, the light source 14 and the detector 24 are respectively installed in the light source installation hole 12 and the detector installation hole 22, then the two ends of the gas tube 3 are respectively inserted into the first installation hole 11 and the second installation hole 21, and finally the light source seat 1 and the sensor seat 2 are connected together through the connecting piece 4; the gas pipe 3 can be taken out only by detaching the connecting piece 4, and the gas pipe 3 with different lengths can be replaced according to different requirements; when high-concentration gas needs to be tested, the short gas tube 3 can be replaced, so that the condition of insufficient measuring range is avoided; when the gas of low concentration needs to be tested, can change long gas pipe 3, promote measurement accuracy.
As shown in fig. 1-2, the connecting member 4 includes a stud bolt 41, a cylindrical nut 42, and a countersunk bolt 43; one of the light source base 1 and the sensor base 2 is provided with a screw hole 51 in threaded connection with the stud bolt 41, and the other is provided with a through hole 52 matched with the stud bolt 41; in two cases, the light source base 1 is provided with a screw hole 51 in threaded connection with the stud 41, and the sensor base 2 is provided with a through hole 52 matched with the stud 41; alternatively, the light source holder 1 is provided with a through hole 52 engaged with the stud bolt 41, and the sensor holder 2 is provided with a screw hole 51 threadedly engaged with the stud bolt 41.
As shown in fig. 1-2, the stud bolt 41 is threadedly coupled to one end of the cylindrical nut 12, and the other end of the cylindrical nut 42 is threadedly coupled to the countersunk bolt 43; one end of the stud bolt 41 passing through the through hole 52 is threadedly coupled to the cylindrical nut 12, and a countersunk head bolt 43 is mounted on the cylindrical nut 12 for the sake of aesthetic appearance.
As shown in fig. 1, one or more annular grooves 6 are formed in the inner walls of the first mounting hole 11 and the second mounting hole 21, and o-shaped sealing rings 61 for sealing the gas pipe 3 are arranged in the annular grooves 6; the gas tube 3 is sealed to prevent gas leakage.
As shown in fig. 1, a light source shell 16 is wrapped on a light source 14, a first sealing ring 17 is sleeved on the light source shell 16, a sensor shell 26 is wrapped on a detector 24, and a second sealing ring 27 is sleeved on the sensor shell 26; and sealing the light source mounting hole and the detector mounting hole to prevent gas leakage.
As shown in fig. 1-2, the new NDIR gas sensor structure further includes a mounting base plate 7, and the light source holder 1 and the sensor holder 2 are both mounted on the mounting base plate 7; a lens 18 is arranged on the light source 14, the light source mounting hole 12 is communicated with the surface of the light source base 1, and the detector mounting hole 22 is communicated with the surface of the sensor base 2; facilitating the installation of the light source 14 and the sensor 24.
As shown in fig. 1-3, the mounting base plate 7 is provided with a first PCB 8 covering the detector mounting hole 22, and a second PCB 9 perpendicular to and electrically connected to the first PCB 8, the first PCB 8 is electrically connected to the detector 24, the light source 14 is connected to a light source connector 141 through a wire, the second PCB 9 is provided with an external interface 91 for external power supply and data output, and a light source interface 92 electrically connected to the light source connector 141; the second PCB board 9 may power and control the light source 14 and the detector 24.
As shown in fig. 1-2, an L-shaped PCB dust cover 10 is disposed on the mounting base plate 7, the PCB dust cover includes a longitudinal portion 101, a transverse portion 102 covering the first PCB 8, an opening 103 disposed on the longitudinal portion 101 for engaging with the second PCB 9, and a folded plate 104 for accommodating the connector 4, a light source dust cover 19 disposed on the light source seat 1 for covering the light source mounting hole 12, and a wire passing groove 191 for electrically connecting the light source 14 with the second PCB 9 is disposed on the rear side of the light source seat 1; the PCB dustproof cover 10 and the light source dustproof cover 19 cover the element mounting holes and the PCB, have the function of preventing dust from influencing the elements and the PCB, and are quite attractive.
As shown in fig. 1-2, the mounting base plate 7, the PCB board dust-proof cover 9 and the light source dust-proof cover 18 are made of abs plastic, resin or acrylic; preventing static electricity from affecting the PCB board 8, the light source 14 and the detector 24.
As shown in fig. 1-2, the inner surface of the gas tube 3 is polished to a smooth mirror surface, and the light source holder 1 and the sensor holder 2 are made of stainless steel, aluminum or copper; the light loss is small when passing through the gas tube 3; the light source seat 1 and the sensor seat 2 can be made of various raw materials, and the raw materials can be selected according to different conditions.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (10)
1. A novel structure of an NDIR gas sensor comprises a light source seat, a sensor seat, a gas pipe and a plurality of connecting pieces; the sensor is characterized in that a first mounting hole and a light source mounting hole communicated with the first mounting hole are formed in the light source seat, and a second mounting hole and a detector mounting hole communicated with the second mounting hole are formed in the sensor seat; the two ends of the gas pipe are respectively inserted into the first mounting hole and the second mounting hole, a first inner flange for limiting the gas pipe is arranged in the first mounting hole, and a second inner flange for limiting the gas pipe is arranged in the second mounting hole; a light source for emitting light rays into the gas pipe is arranged in the light source mounting hole, and a detector is arranged in the detector mounting hole; the surface of the light source seat is provided with an air inlet hole for introducing air between the light source and the gas pipe; the surface of the sensor seat is provided with an exhaust hole for exhausting gas between the detector and the gas pipe; and the light source seat and the sensor seat are respectively provided with a connecting unit which is detachably connected with the connecting piece.
2. An NDIR gas sensor development according to claim 1, wherein said connector comprises a stud, a cylindrical nut and a countersunk bolt; one of the light source seat and the sensor seat is provided with a screw hole in threaded connection with the stud bolt, and the other of the light source seat and the sensor seat is provided with a through hole matched with the stud bolt.
3. An NDIR gas sensor new structure as claimed in claim 2, wherein said stud bolt is screwed with one end of said cylindrical nut, and the other end of said cylindrical nut is screwed with said countersunk head bolt.
4. An NDIR gas sensor construction as claimed in claim 1, wherein said first and second mounting holes each have one or more annular grooves formed in the inner wall thereof, said grooves having o-rings therein for sealing against said gas tube.
5. The novel structure of an NDIR gas sensor as claimed in claim 1, wherein said light source is covered with a light source housing, said light source housing is fitted with a first sealing ring, said detector is covered with a sensor housing, and said sensor housing is fitted with a second sealing ring.
6. An NDIR gas sensor format in accordance with claim 1, further comprising a mounting base plate, said light source mount and said sensor mount each being mounted on said mounting base plate; the light source is provided with a lens, the light source mounting hole is communicated with the surface of the light source seat, and the detector mounting hole is communicated with the surface of the sensor seat.
7. An NDIR gas sensor new structure as claimed in claim 6, wherein said mounting base plate is provided with a first PCB covering said detector mounting hole, and a second PCB perpendicular to and electrically connected to said first PCB; the first PCB is electrically connected with the pins on the detector, the light source is connected with a light source connector through a wire, and the second PCB is provided with an external interface for an external power supply and output data and a light source interface electrically connected with the light source connector.
8. The new structure of an NDIR gas sensor as claimed in claim 7, wherein said installation bottom plate is provided with an L-shaped dust cover of PCB board, said dust cover of PCB board comprises a longitudinal portion, a transverse portion covering said first PCB board, said longitudinal portion is provided with an opening matching with said second PCB board, and a folded plate for accommodating said connecting member, said light source seat is provided with a dust cover of light source for covering said light source installation hole, and said light source seat is provided with a wire passing groove on its rear side for electrically connecting said light source with said second PCB board.
9. An NDIR gas sensor new structure as claimed in claim 8, characterized in that, the material of said installation base plate, said PCB dust cover and said light source dust cover is abs plastic, resin or acrylic.
10. An NDIR gas sensor as claimed in claim 1, wherein said gas tube is polished to a smooth mirror surface on its inner surface, and said light source mount and said sensor mount are made of stainless steel, aluminum or copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920263033.3U CN210427344U (en) | 2019-03-01 | 2019-03-01 | Novel structure of NDIR gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920263033.3U CN210427344U (en) | 2019-03-01 | 2019-03-01 | Novel structure of NDIR gas sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210427344U true CN210427344U (en) | 2020-04-28 |
Family
ID=70360624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920263033.3U Expired - Fee Related CN210427344U (en) | 2019-03-01 | 2019-03-01 | Novel structure of NDIR gas sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210427344U (en) |
-
2019
- 2019-03-01 CN CN201920263033.3U patent/CN210427344U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11035800B2 (en) | Portable device for colorimetric or fluorometric analysis, and method of conducting colorimetric or fluorometric analysis | |
| CN110361355B (en) | Spiral gas concentration detection device, manufacturing method thereof and alarm device | |
| CN105203491A (en) | In-situ detection system for concentration of methane in deep sea | |
| CN210427344U (en) | Novel structure of NDIR gas sensor | |
| US8077316B2 (en) | Chlorine dioxide sensor | |
| CN216350333U (en) | Small-size NDIR gas sensor | |
| US20170038294A1 (en) | Gas cap for optical sensor | |
| CN106596408A (en) | Triangular structure-based long range spectral absorption cell | |
| KR20080093767A (en) | Diffusion-type gas sensor module using infrared rays | |
| EP4063832A1 (en) | Integrated sensor | |
| CN201569625U (en) | Protein detection instrument | |
| CN107064039A (en) | A kind of detection method of ozone monitoring sensor and its ozone concentration based on phase lock amplifying technology | |
| CN205719970U (en) | A kind of liquid identification device | |
| CN210664766U (en) | Single-light-source multi-detection-module photometer | |
| CN210376128U (en) | Spiral gas concentration detection device and alarm device | |
| CN214539236U (en) | Novel multichannel ultraviolet detector | |
| CN107340275B (en) | Water quality on-line detection system | |
| CN220120690U (en) | Spectrum detection mechanism and refrigerator | |
| CN215448963U (en) | Portable infrared sensor air chamber | |
| CN210376130U (en) | Gas concentration detection device with isolation effect and combustible gas alarm device | |
| CN212134469U (en) | Light pool of ozone detector | |
| CN212646466U (en) | Circular high-resolution infrared absorption gas detector | |
| CN214668521U (en) | Spectrophotometer | |
| CN210221815U (en) | Optical fiber gas sensor convenient and rapid to install | |
| CN218917194U (en) | Small-size gas detection sensor based on NDIR technique integral type structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200428 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |