CN214120316U - Air purifier suitable for bathroom - Google Patents
Air purifier suitable for bathroom Download PDFInfo
- Publication number
- CN214120316U CN214120316U CN202023267374.XU CN202023267374U CN214120316U CN 214120316 U CN214120316 U CN 214120316U CN 202023267374 U CN202023267374 U CN 202023267374U CN 214120316 U CN214120316 U CN 214120316U
- Authority
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- China
- Prior art keywords
- filter screen
- solution tank
- air
- air inlet
- toilet
- 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
- 238000005406 washing Methods 0.000 claims abstract description 36
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 37
- 239000013566 allergen Substances 0.000 claims description 30
- 238000011045 prefiltration Methods 0.000 claims description 23
- 238000001125 extrusion Methods 0.000 claims description 21
- 229910052799 carbon Inorganic materials 0.000 claims description 15
- 239000003205 fragrance Substances 0.000 claims description 11
- 230000006978 adaptation Effects 0.000 claims 1
- 238000000746 purification Methods 0.000 description 12
- 239000002245 particle Substances 0.000 description 8
- 239000000428 dust Substances 0.000 description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 230000035943 smell Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 238000005034 decoration Methods 0.000 description 3
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 210000004243 sweat Anatomy 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000002386 air freshener Substances 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009298 carbon filtering Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000003905 indoor air pollution Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The utility model discloses an air purifier suitable for a toilet, which consists of a purifier body and a hand washing device arranged at one side of the purifier body, wherein the purifier body comprises a casing, a filtering component and a fan, the lower part of the casing is provided with an air inlet, the upper part of the casing is provided with an air outlet, the interior of the casing is provided with a purifying chamber, the filtering component and the fan are positioned in the purifying chamber, and is arranged along the direction from the air inlet to the air outlet, the air inlet is connected with an air inlet pipe, the bottom of the purifying chamber is provided with a solution tank, one end of the air inlet pipe extends into the solution tank, the other end of the air inlet pipe extends out of the shell, the hand washing device comprises a solution tank and a hand washing liquid squeezing mechanism, a solution flow passage for communicating the solution tank with the solution tank is formed in the side wall of the shell, a one-way valve from the solution tank to the solution tank is arranged in the solution flow passage, and the hand washing liquid squeezing mechanism is arranged on the solution tank. The utility model is suitable for an in the bathroom, get rid of the stink when air-purifying, and be convenient for clear up.
Description
Technical Field
The utility model relates to an air purifier technical field, concretely relates to air purifier suitable for bathroom.
Background
An air cleaner, also known as an air cleaner, an air freshener, and a cleaner, refers to a product capable of adsorbing, decomposing, or converting various air pollutants, which generally include PM2.5, dust, pollen, odor, formaldehyde, and other decoration pollutants, bacteria, allergens, and the like, so as to effectively improve air cleanliness.
However, when the existing air purifier is installed in a toilet for use, it is difficult to remove odor in the toilet, so that only pollutants in the air can be purified, and thus people who feel uncomfortable smelling the odor in the toilet, and the existing air purifier is inconvenient for users to clean up the pollutant particles in the air, thereby resulting in too short service life of the air purifier.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the odor in the toilet is difficult to remove when the toilet is installed for use, and the technical problem that the inconvenient user of present air purifier clears up the inside pollutant particles provides an air purifier suitable for the toilet.
The technical scheme of the utility model as follows:
an air purifier suitable for a toilet consists of a purifier body and a hand washing device arranged on one side of the purifier body, wherein the purifier body comprises a casing, a filtering component and a fan, an air inlet is arranged on the lower portion of the casing, an air outlet is arranged on the upper portion of the casing, a purifying chamber is arranged inside the casing, the air inlet is communicated with the air outlet through the purifying chamber, the filtering component and the fan are positioned in the purifying chamber and arranged along the direction from the air inlet to the air outlet, the air inlet is connected with an air inlet pipe, a solution tank is arranged at the bottom of the purifying chamber, hand washing liquid with fragrance is filled in the solution tank, one end of the air inlet pipe extends into the solution tank, the other end of the air inlet pipe extends out of the casing, the hand washing device comprises a solution tank and a hand washing liquid extruding mechanism, and the hand washing liquid with fragrance is filled in the solution tank, the side wall of the shell is provided with a solution flow passage which is communicated with the solution tank and the solution tank, a one-way valve from the solution tank to the solution tank is arranged in the solution flow passage, and the hand sanitizer extrusion mechanism is arranged on the solution tank so as to extrude the hand sanitizer from the solution tank.
Furthermore, the filtering component comprises a pre-filtering net, a HEPA filtering net, an activated carbon filtering net and an allergen filtering net from the air inlet to the air outlet in sequence.
Further, a lateral wall of the purification cavity is provided with a filter screen insertion hole which penetrates through the outside of the casing and is respectively matched with the pre-filter screen, the HEPA filter screen, the activated carbon filter screen and the allergen filter screen, and the other lateral wall of the purification cavity is concavely provided with a filter screen fixing groove which is respectively correspondingly inserted with the pre-filter screen, the HEPA filter screen, the activated carbon filter screen and the allergen filter screen.
Further, prefiltration net, HEPA filter screen, active carbon filter screen, allergen filter screen follow the filter screen inserted hole inserts, just prefiltration net, HEPA filter screen, active carbon filter screen, allergen filter screen's one end expose in the casing outside in advance, prefiltration net, HEPA filter screen, active carbon filter screen, allergen filter screen expose in the outside one end of casing and are provided with the handle arm-tie.
Furthermore, the area of the handle pulling plate is larger than the filter screen inserting opening, and the handle pulling plate is attached to the machine shell.
Furthermore, an upper cover is arranged on the air outlet, and a plurality of exhaust holes communicated with the air outlet are formed in the upper cover.
Furthermore, the exhaust holes are distributed on the peripheral side and the top surface of the upper cover.
Furthermore, the hand sanitizer extrusion mechanism comprises an extrusion key and a hand sanitizer extrusion pipe, the hand sanitizer extrusion pipe vertically penetrates from the bottom of the solution tank to the inside of the solution tank, and the extrusion key is arranged on the side wall of the solution tank.
Furthermore, a hand sanitizer adding port is formed in the top of the solution tank, and a cover is arranged on the hand sanitizer adding port.
Further, a solution discharge pipe vertically communicated with the solution tank is arranged at the bottom of the machine shell, and a valve is arranged on the solution discharge pipe.
Compared with the prior art, the beneficial effects of the utility model reside in that:
(1) during the use, the air gets into from the intake pipe under the effect of fan, and solution washing in the solution tank is passed through earlier, and the liquid soap that has the fragrance because of this solution uses to make the stink of bathroom and fragrance neutralization, get rid of the foul smell, rethread filter assembly filters the back in order to obtain pure air, discharge from a plurality of exhaust hole at last.
(2) Its filtering component who adopts includes prefiltration net, HEPA filter screen, active carbon filter screen and allergen filter screen, and the filter effect is very good, wherein:
the pre-filtering net can effectively remove large dust and animal hair and play a role in protecting other filtering nets;
the HEPA filter screen is formed by interweaving very fine organic fibers, has strong capture capacity on particles, small pore diameter, large adsorption capacity and high purification efficiency, has water absorption, and has the purification rate of 99.97 percent for particles with the particle size of 0.3 micron;
the activated carbon filter screen can be used for removing peculiar smells such as sweat odor, pet smell and the like, and adsorbing harmful gases brought by decoration such as formaldehyde, methylbenzene and the like;
the allergen filter screen can effectively filter allergens such as pollen, pet hair and the like.
(3) The handle arm-tie of pre-filter screen, HEPA filter screen, active carbon filter screen, allergen filter screen accessible outer end is directly pulled out and is cleared up or change, after the clearance or new pre-filter screen, HEPA filter screen, active carbon filter screen, allergen filter screen directly insert the filter screen fixed slot from the filter screen inserted hole fixed can, this structural design is very simple to the dismouting of filter screen, very convenient to detach washs and changes.
(4) The exhaust holes are formed in the periphery of the upper cover and the upper cover, so that pure air can be exhausted from different directions, air in the used environment becomes uniform, the time for purifying the whole use space is short, and the purification efficiency can be greatly improved.
(5) The hand sanitizer with fragrance in the solution tank is provided from a hand washing device on one side of the purifier body, the hand washing device is common hand washing equipment in the market, the hand sanitizer flows out from a hand sanitizer extrusion pipe at the lower end by pressing an extrusion pressing key so as to be used for cleaning people in a toilet, a solution flow passage is formed between a solution tank of the hand washing device and the solution tank of the purifier body, and a check valve from the solution tank to the solution tank is arranged in the solution flow passage, so that the hand sanitizer in the hand washing device can pass through the purifier body from the hand washing device, one-object dual-purpose is realized, and the practicability is high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an air purifier suitable for a toilet according to an embodiment of the present invention;
fig. 2 is a schematic view illustrating the filter assembly according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to explain the technical solution of the present invention, the following description is made by using specific examples.
Examples
Referring to fig. 1, an embodiment of the present invention provides an air purifier suitable for a toilet, the air purifier is composed of a purifier body 1 and a hand washing device 2 disposed at one side of the purifier body 1, the purifier body 1 includes a casing 11, a filter assembly and a fan 13, an air inlet is disposed at a lower portion of the casing 11, an air outlet is disposed at an upper portion of the casing, a purification chamber 14 is disposed inside the casing 11, the air inlet is communicated with the air outlet through the purification chamber 14, air enters the purification chamber 14 from the air inlet to be purified and then is discharged from the air outlet, an upper cover 3 is disposed on the air outlet, a plurality of exhaust holes 31 communicated with the air outlet are disposed on the upper cover 3, so that purified air can be divided from the plurality of exhaust holes 31, the filter assembly and the fan 13 are disposed in the purification chamber 14 and are disposed along a direction from the air inlet to the air outlet, air is exhausted from the air inlet to the exhaust holes 31 through the fan 13, the filter assembly purifies air, and the air inlet is connected with intake pipe 4, and the bottom of purifying cavity 14 is equipped with solution tank 15, is equipped with the liquid soap that has the fragrance in the solution tank 15, and the one end of intake pipe 4 stretches into in solution tank 15, and the other end of intake pipe 4 stretches out in casing 11 outside. Therefore, air enters from the air inlet pipe 4, firstly passes through the solution tank 15, is cleaned by the solution in the solution tank 15, and the solution uses the hand sanitizer with fragrance, so that the odor and the fragrance in a toilet are neutralized, the odor is removed, the pure air is obtained after the pure air is filtered by the filter assembly, and finally the pure air is discharged from the plurality of exhaust holes 31. Preferably, the exhaust holes 31 are distributed on the peripheral side and the top surface of the upper cover 3, so that the purified air can be exhausted from different directions, the air in the used environment becomes uniform, the time for fully purifying the whole use space is short, and the purification efficiency can be greatly improved.
The solution in the solution tank 15 is provided by a hand washing device 2 on one side of the purifier body 1, the hand washing device 2 is common hand washing equipment in the market, and comprises a solution tank 21 and a hand washing solution extrusion mechanism, the hand washing solution with fragrance is filled in the solution tank 21, a solution flow passage which is communicated with the solution tank 21 and the solution tank 15 is arranged on the side wall of the shell 11, a one-way valve 5 from the solution tank 21 to the solution tank 15 is arranged in the solution flow passage, the hand washing solution extrusion mechanism is arranged on the solution tank 21 so as to extrude the hand washing solution from the solution tank 21, the hand washing solution extrusion mechanism comprises an extrusion key 22 and a hand washing solution extrusion pipe 23, the hand washing solution extrusion pipe 23 vertically penetrates from the bottom of the solution tank 21 to the inside of the solution tank 21, and the extrusion key 22 is arranged on the side wall of the solution tank 21. The hand washing device 2 can be used for cleaning people in a toilet, and hand sanitizer in the hand washing device 2 can pass through the purifier body 1 from the hand washing device 2, so that the dual-purpose of one object is realized, and the practicability is high.
The top of the solution tank 21 is provided with a hand sanitizer adding port, a hand sanitizer can be added into the solution tank 21 through the hand sanitizer adding port, and a cover 24 is arranged on the hand sanitizer adding port.
The bottom of the housing 11 is provided with a solution discharge pipe 6 vertically communicated with the solution tank 15, and the solution discharge pipe 6 is provided with a valve 7. The old solution in the solution tank 15 can be discharged through the solution discharge pipe 6, and a new solution can be replenished through the solution flow path.
Further, the filter assembly comprises a pre-filter screen 121, a HEPA filter screen 122, an activated carbon filter screen 123 and an allergen filter screen 124 in sequence from the air inlet to the air outlet.
Wherein, the pre-filtering net 121 can effectively remove large dust and animal hair and play a role in protecting other filtering nets; the HEPA filter screen 122 is formed by interweaving very fine organic fibers, has strong capture capacity on particles, small pore diameter, large adsorption capacity, high purification efficiency and water absorption, and has the purification rate of 99.97 percent for particles with the particle size of 0.3 micron; the activated carbon filter screen 123 can be used for removing peculiar smells such as sweat odor, pet smell and the like, and adsorbing harmful gases brought by decoration such as formaldehyde, toluene and the like; allergen filter screen 124 can effectively filter allergens such as pollen, pet hair.
Further, as shown in fig. 2, a side wall of the purifying chamber 14 is provided with a filter insert 16 penetrating to the outside of the housing 11 and respectively matching with the pre-filter 121, the HEPA filter 122, the activated carbon filter 123, and the allergen filter 124, the pre-filter 121, the HEPA filter 122, the activated carbon filter 123, and the allergen filter 124 are inserted from the filter insert 16, one end of the pre-filter 121, the HEPA filter 122, the activated carbon filter 123, and the allergen filter 124 is exposed to the outside of the housing 11, one end of the pre-filter 121, the HEPA filter 122, the activated carbon filter 123, and the allergen filter 124 exposed to the outside of the housing 11 is provided with a handle pulling plate 8, an area of the handle pulling plate 8 exposed to the outside is larger than the filter insert 16 and is attached to the housing 11, thereby sealing a gap around the filter insert 16 and forming a sealed space in the purifying chamber 14, the other side wall of the purifying chamber 14 is concavely provided with a filter screen fixing groove 17 which is correspondingly inserted with the pre-filter screen 121, the HEPA filter screen 122, the active carbon filter screen 123 and the allergen filter screen 124.
The pre-filter 121 is cleaned 1-2 times a month, the filter is removed during cleaning, dust is cleaned up by a dust collector or a rag, if the filter is washed by water, the filter can be washed by clean water, and the filter can be dried by spin-drying or blowing by electric air and then is installed into an air purifier.
HEPA filter screen 122, if not specifically noted, is generally not washable. Because indoor air pollution is comparatively serious at present in domestic, HEPA filter screen's life-span is the longest only 3 months or even shorter, so HEPA filter screen needs often to be changed. However, the service life of the HEPA filter screen can be prolonged to a certain extent by cleaning the HEPA filter screen by a dust collector, but if the HEPA filter screen which is generally white tends to be black, the HEPA filter screen is recommended to be replaced as soon as possible in order to ensure the air filtering effect and the health.
The activated carbon screen 123 also needs to be replaced frequently to avoid saturation of adsorption, preferably once in half a year. Or the cleaning agent can be taken out periodically and then placed in the sun for solarization so as to keep the cleaning effect and prolong the service life.
The allergen filter screen 124 is cleaned or replaced once a month. The allergen filter 124 cannot be washed with water and can be used for tapping dust after a certain period of time.
As the filter screens need to be cleaned or replaced frequently. Through this structural design, the handle arm-tie 8 of pre-filter 121, HEPA filter screen 122, active carbon filter screen 123, allergen filter screen 124 accessible outer end directly pulls out and clears up or change, and the clearance back or new pre-filter screen 121, HEPA filter screen 122, active carbon filter screen 123, allergen filter screen 124 directly insert the filter screen fixed slot 17 from filter screen inserted hole 16 fixed can. The filter screen is very simple to disassemble and assemble, and is very convenient to disassemble, clean and replace.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides an air purifier suitable for bathroom which characterized in that: the hand washing device comprises a purifier body and a hand washing device arranged on one side of the purifier body, wherein the purifier body comprises a shell, a filtering component and a fan, an air inlet is formed in the lower part of the shell, an air outlet is formed in the upper part of the shell, a purifying chamber is formed in the shell, the air inlet is communicated with the air outlet through the purifying chamber, the filtering component and the fan are positioned in the purifying chamber and are arranged along the direction from the air inlet to the air outlet, the air inlet is connected with an air inlet pipe, a solution tank is arranged at the bottom of the purifying chamber, a hand washing liquid with fragrance is filled in the solution tank, one end of the air inlet pipe extends into the solution tank, the other end of the air inlet pipe extends out of the shell, the hand washing device comprises a solution tank and a hand washing liquid squeezing mechanism, and the hand washing liquid with fragrance is filled in the solution tank, the side wall of the shell is provided with a solution flow passage which is communicated with the solution tank and the solution tank, a one-way valve from the solution tank to the solution tank is arranged in the solution flow passage, and the hand sanitizer extrusion mechanism is arranged on the solution tank so as to extrude the hand sanitizer from the solution tank.
2. An air cleaner adapted for use in a toilet, according to claim 1, wherein: the filter component comprises a pre-filter screen, a HEPA filter screen, an active carbon filter screen and an allergen filter screen from an air inlet to an air outlet in sequence.
3. An air cleaner adapted for use in a toilet, according to claim 2, wherein: purify a lateral wall of cavity be equipped with run through to the casing outside respectively with the filter screen inserted hole of prefiltration net, HEPA filter screen, active carbon filter screen, allergen filter screen looks adaptation, purify the opposite lateral wall of cavity concavely be equipped with respectively with the corresponding filter screen fixed slot of pegging graft of prefiltration net, HEPA filter screen, active carbon filter screen, allergen filter screen.
4. An air cleaner adapted for use in a toilet according to claim 3, wherein: prefiltration net, HEPA filter screen, active carbon filter screen, allergen filter screen follow the filter screen inserted into the inserted hole, just the one end of prefiltration net, HEPA filter screen, active carbon filter screen, allergen filter screen exposes in the casing outside, prefiltration net, HEPA filter screen, active carbon filter screen, allergen filter screen expose in the outside one end of casing and are provided with the handle arm-tie.
5. An air cleaner adapted for use in a toilet according to claim 4, wherein: the area of the handle pulling plate is larger than the filter screen inserting opening, and the handle pulling plate is attached to the casing.
6. An air cleaner adapted for use in a toilet, according to claim 1, wherein: an upper cover is arranged on the air outlet, and a plurality of exhaust holes communicated with the air outlet are formed in the upper cover.
7. An air cleaner adapted for use in a toilet according to claim 6, wherein: the exhaust holes are distributed on the periphery and the top surface of the upper cover.
8. An air cleaner adapted for use in a toilet, according to claim 1, wherein: the hand sanitizer extrusion mechanism comprises an extrusion key and a hand sanitizer extrusion pipe, the hand sanitizer extrusion pipe vertically penetrates from the bottom of the solution tank to the inside of the solution tank, and the extrusion key is arranged on the side wall of the solution tank.
9. An air cleaner adapted for use in a toilet, according to claim 1, wherein: the top of the solution tank is provided with a hand sanitizer adding port, and a cover is arranged on the hand sanitizer adding port.
10. An air cleaner adapted for use in a toilet, according to claim 1, wherein: and a solution discharge pipe vertically communicated with the solution tank is arranged at the bottom of the machine shell, and a valve is arranged on the solution discharge pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023267374.XU CN214120316U (en) | 2020-12-30 | 2020-12-30 | Air purifier suitable for bathroom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023267374.XU CN214120316U (en) | 2020-12-30 | 2020-12-30 | Air purifier suitable for bathroom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214120316U true CN214120316U (en) | 2021-09-03 |
Family
ID=77485936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023267374.XU Expired - Fee Related CN214120316U (en) | 2020-12-30 | 2020-12-30 | Air purifier suitable for bathroom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214120316U (en) |
-
2020
- 2020-12-30 CN CN202023267374.XU patent/CN214120316U/en not_active Expired - Fee Related
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| 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: 20210903 |
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| CF01 | Termination of patent right due to non-payment of annual fee |