CN210156757U - Electrical cabinet with drying function - Google Patents
Electrical cabinet with drying function Download PDFInfo
- Publication number
- CN210156757U CN210156757U CN201921378365.2U CN201921378365U CN210156757U CN 210156757 U CN210156757 U CN 210156757U CN 201921378365 U CN201921378365 U CN 201921378365U CN 210156757 U CN210156757 U CN 210156757U
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- China
- Prior art keywords
- cabinet body
- heating box
- fan
- regulator cubicle
- cabinet
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- 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
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- 238000001035 drying Methods 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 66
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 5
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 230000003245 working effect Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000007599 discharging Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- Drying Of Solid Materials (AREA)
Abstract
The utility model relates to a regulator cubicle with drying function relates to the electrical equipment field, has effectively solved and has received influence and circuit short circuit problem because of the interior electrical component working property of regulator cubicle that the humidity leads to, and it includes the regulator cubicle cabinet body, base, the regulator cubicle integument metal sheet divide into the upper cabinet body and the lower floor's cabinet body, one side that the metal sheet is close to the lower floor's cabinet body is provided with the heating box, the internal fan that is equipped with of upper cabinet, the fan air outlet passes the metal sheet and stretches into to the heating box in, draw-in groove is installed to the inboard one side in lower floor's cabinet body front panel middle part, the lower floor's cabinet body front panel position that the draw-in. The utility model provides a be provided with fan and heating box in the regulator cubicle, can carry out the circulation heating to the air in the regulator cubicle to discharge the moisture from the hydrofuge mouth, reduce air humidity, avoid electrical components to receive the influence in the regulator cubicle.
Description
Technical Field
The utility model belongs to the technical field of electrical equipment's technique and specifically relates to an regulator cubicle with drying function is related to.
Background
At present, along with the continuous improvement of the socioeconomic development level, the electrical cabinet is more and more favored by people, elements such as a power supply, a switch, power distribution, line protection and the like are usually arranged in the electrical cabinet, and the electrical cabinet plays an important role in the normal operation of the whole electrical system and has irreplaceability. Along with the regulator cubicle application range is wider and wider, people also are higher and higher to the requirement in aspects such as the performance of regulator cubicle.
Part regulator cubicle long-term work in outdoor environment, and the cabinet air phase is to sealed, in the season that the rainwater is many, the moisture can be at the inside accumulation of regulator cubicle, and the humidity increases in the regulator cubicle, very easily produces the condensation phenomenon with electronic components surface in the cabinet, and electrical components working property can consequently receive to influence and can cause the circuit short circuit even, causes the conflagration, consequently requires the regulator cubicle to have drying function.
The dampproofing drying measure of current regulator cubicle is usually for placing the moisture-expelling drier or install air conditioner refrigeration dehydrating unit additional, but the moisture-absorbing effect of moisture-expelling drier is limited, and the absorbed moisture is difficult to be discharged, so the effect is not obvious, and install humidity and temperature in the control regulator cubicle that air conditioner refrigeration dehydrating unit can be fine additional, but often can occupy the regulator cubicle very big space and the cost is high. Therefore, a new efficient and quick method which is low in cost and can automatically dry air in the electrical cabinet is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a regulator cubicle with drying function, wherein the utility model provides a be provided with fan and heating box in the regulator cubicle, can heat the air that advances, realize the drying process to the regulator cubicle to discharge the moisture from the hydrofuge mouth, avoid electrical component to receive the influence in the regulator cubicle.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
an electrical cabinet with a drying function comprises an electrical cabinet body and a base, wherein a horizontally placed metal plate is arranged in the electrical cabinet body, the part of the electrical cabinet body, which is positioned above the metal plate, is defined as an upper-layer cabinet body, the part of the electrical cabinet body, which is positioned below the metal plate, is a lower-layer cabinet body, one side, which is provided with an opening, of the electrical cabinet body is a front panel, one side, which is close to the lower-layer cabinet body, of the metal plate is provided with a heating box, one inward side of the middle part of a front panel of the lower-layer cabinet body is provided with a clamping groove, the position, corresponding to the clamping groove, of the front panel of the lower-layer cabinet body is provided with an observation window, a fan is arranged in the upper-layer cabinet body, one side, which;
the clamping groove is internally provided with a humidity detector for outputting a humidity detection signal, a comparison circuit coupled with the humidity detector for receiving the humidity detection signal and outputting a comparison signal, and a control circuit coupled with the comparison circuit for receiving the comparison signal and outputting a control signal to the fan and the heating box.
Through adopting above-mentioned technical scheme, the metal sheet that the level was placed divide into two-layer cabinet body about with the regulator cubicle, then sets up the heating box at lower floor's cabinet body top, is provided with the fan in the upper cabinet body, and the air outlet and the heating box of fan are communicating, and the fan is used for supplying air for lower floor's cabinet body and the heating box then heats the air of coming in, and hot-air can realize the drying process to electrical components in the regulator cubicle, and humid air then can be followed and row of wet mouthful discharges. Install the draw-in groove on the cabinet body front panel of lower floor, and the observation window on the front panel then can be used for observing the humidity detection device of placing in the draw-in groove and the internal condition of lower floor's cabinet, and moisture detector and fan and heating box electric connection, but the control circuit of fan and heating rod is automatic after the signal that receives moisture detector and send is opened, realizes high-efficient swift dehumidification drying function from this.
The utility model discloses further set up to: and heat dissipation ventilation holes are formed in two side walls of the upper-layer cabinet body.
Through adopting above-mentioned technical scheme, set up intensive vertical bar form louvre on the cabinet body lateral wall of upper strata, these holes are playing the ventilation effect, are favorable to the radiating while of fan, and the thin and narrow hole also can prevent that the foreign matter from getting into, causes the damage to the internal equipment of cabinet.
The utility model discloses further set up to: the top and the metal sheet fixed connection of heating box, the heating box includes heating rod and casing, heating rod quantity is a plurality of and side by side align arrangement in the heating box, the lateral wall of heating box is hollow out construction.
Through adopting above-mentioned technical scheme, the heating box is fixed at the top of the upper cabinet body, constitute by the casing of a plurality of heating rods that arrange into one row and lateral wall fretwork, a plurality of heating rods have guaranteed that the air that comes out from the air outlet can be by rapid heating, and the heating box bottom fretwork not, the design of lateral wall fretwork, can guarantee on the one hand that the air is long enough with the contact time of heating rod, can directly not pass the heating box bottom and get into the lower floor cabinet body, on the other hand can make hot-air from the heating box around the lower floor cabinet body, at the internal circulation that forms of lower floor cabinet.
The utility model discloses further set up to: and an air inlet is formed in the side wall, close to the fan, of the upper-layer cabinet body and is communicated with the fan.
Through adopting above-mentioned technical scheme, set up the air intake of fan on the lateral wall of the upper cabinet body, guaranteed to last unobstructed air inlet.
The utility model discloses further set up to: the upper cabinet body is provided with a protective net at the air inlet.
Through adopting above-mentioned technical scheme, the protection network of setting at the air intake has guaranteed that the foreign matter can not get into fan and heating box, plays the guard action to fan and heating box.
The utility model discloses further set up to: the moisture exhaust openings are arranged in an obliquely upward and side-by-side manner from outside to inside in number.
Through adopting above-mentioned technical scheme, set up outside-in on the both sides face of the lower floor cabinet body and be that set up a plurality of hydrofuge mouths in the slant, be favorable to the internal moisture of lower floor cabinet and comdenstion water to discharge along hydrofuge mouth slant on the one hand, on the other hand, the ascending opening design in slant has also prevented the foreign matter entering, causes the damage to the internal electrical element of the lower floor cabinet.
The utility model discloses further set up to: the observation window is made of transparent materials.
Through adopting above-mentioned technical scheme, set up transparent material's observation window on the front panel of the lower floor cabinet body, whether the operational aspect of each components and parts and the hydrofuge mouth top of the internal lateral wall of lower floor cabinet of can conveniently observing have formed the comdenstion water on lower floor cabinet, observe the hydrofuge effect of fan and heating box.
The utility model discloses further set up to: the opening part of the upper cabinet body and the lower cabinet body is provided with doors, and the doors are hinged with the corresponding cabinet bodies respectively.
By adopting the technical scheme, the arrangement of the door is convenient for workers to install and maintain the fan in the upper-layer electrical cabinet and the electrical element in the lower-layer electrical cabinet. The switch also plays a role in safety, ensures that irrelevant personnel cannot be opened, protects property safety and avoids potential safety hazards.
To sum up, the utility model discloses a beneficial technological effect does:
the mutual cooperation of humidity detector in fan, electric heat box, hydrofuge mouth and the draw-in groove for fan and heating box are opened or are closed along with the change of humidity is automatic, and high-efficient swift and intelligent realization is to the drying process of air in the regulator cubicle.
Drawings
Fig. 1 is a first schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a third schematic structural diagram of the present invention.
Fig. 4 is a schematic view of the top cover of the heating box of the present invention.
Fig. 5 is a circuit connection diagram of the middle moisture detector, the comparison circuit, the control circuit, the fan and the heating box of the present invention.
In the figure, 1, an electric cabinet body; 2. a base; 3. an upper layer cabinet body; 4. a lower layer cabinet body; 5. a metal plate; 6. a fan; 7. a heating cartridge; 8. an air outlet; 9. a front panel; 10. a comparison circuit; 11. a control circuit; 12. a moisture detector; 13. a moisture removal port; 14. a heat dissipation vent; 15. a heating rod; 16. a housing; 17. an air inlet; 18. a protective net; 19. an observation window; 20. a door; 21. locking; 22. a clamping groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 4, an electrical cabinet with drying function disclosed by the present invention comprises a rectangular electrical cabinet body 1 made of steel and bases 2 distributed on four legs, wherein the electrical cabinet body 1 is divided into an upper layer cabinet body and a lower layer cabinet body by a horizontally placed steel metal plate 5, a circulating fan 6 is placed on the left side in the upper layer cabinet body 3, a rectangular heating box 7 is fixed on the lower end surface of the horizontally placed steel plate through 4 screws, an air outlet 8 is arranged on the fan 6 in the direction of the upper end surface of the steel plate, the air outlet 8 extends into the heating box 7 through the steel plate, a layer of heating rods 15 are placed in the heating box 7 side by side, 17 heating boxes 7 are provided with a hollowed casing 16 on three sides, round holes are distributed on the upper surface, the fan 6 and the heating box 7 are matched for heating the air sent by the fan 6, then the air is blown into the lower cabinet body 4, so that the drying treatment of the electric elements in the lower cabinet body 4 is realized.
Referring to fig. 2, vertical strip-shaped heat dissipation vent holes 14 are formed in two side walls of the upper cabinet body 3, and the heat dissipation vent holes 14 enable air in the upper cabinet body 3 to realize convection, so that the ventilation and heat dissipation effects are achieved. Wherein, an air inlet 17 is arranged on the side wall close to the fan 6, and an iron protective net 18 is arranged at the air inlet 17 to prevent foreign matters from entering the fan 6 and damaging the fan. And four horizontal bar-shaped moisture discharging openings 13 are respectively arranged on two side walls of the lower cabinet body 4 close to the bottom, the moisture discharging openings 13 are obliquely upwards opened from outside to inside, so that the purpose is two, one is to prevent foreign matters from entering, and the other is to enable moisture and condensed water to be better discharged from the moisture discharging openings 13 to the lower cabinet body 4. In addition, the doors 20 are respectively arranged at the openings of the upper layer cabinet body 3 and the lower layer cabinet body 4, the doors 20 are respectively hinged with one side edge of the corresponding cabinet body, the doors 20 are provided with plane dustproof locks 21, and an iron clamping groove 22 is arranged at the middle position of one surface of the door 20 of the lower layer cabinet body 4 facing the inside of the cabinet body; referring to fig. 3, a transparent observation window 19 made of acrylic material is provided on a side of the door 20 of the lower cabinet 4 facing the outside of the cabinet and corresponding to the slot 22.
As shown in fig. 5, a humidity detector 12 for outputting a humidity detection signal, a comparison circuit 10 coupled to the humidity detector 12 for receiving the humidity detection signal and outputting a comparison signal, and a control circuit 11 coupled to the comparison circuit 10 for receiving the comparison signal and outputting a control signal to the blower 6 and the heating box 7 are disposed in the card slot.
The humidity detector 12 is a humidity sensor, the humidity sensor is RS485 in model, the comparison circuit 10 includes a resistor R1 with one end connected to the power source VCC, a slide rheostat RP2 with one end connected to the resistor R1 and the other end grounded, a voltage comparator a2 with a positive phase input end connected to the humidity sensor and a negative phase input end connected to the resistor R1 and the slide rheostat RP2, the voltage comparator a2 is LM393 in model, the control circuit 11 is a triode Q1 with a base connected to the output end of the voltage comparator a2 and a collector connected to the power source VCC, the triode Q1 is NPN in model and S9014, and an emitter of the triode Q1 is connected to the fan 6 and the heating box 7.
The implementation principle of the embodiment is as follows: in a period of frequent occurrence of rain, when the humidity detector 12 detects that the humidity of the air in the lower cabinet 4 is increased, a control signal is transmitted to the control circuit 11 of the fan 6 and the heating box 7, the fan 6 and the heating box 7 automatically start to work after receiving the control signal, the air is sent to the air outlet 8 from the air inlet 17 by the fan 6, the air coming out of the air outlet 8 is properly heated by the heating box 7, the heated air is diffused into the lower cabinet 4 from the round holes on the side surface of the heating box 7 to form a circulating air duct, electrical components and air in the lower cabinet 4 are dried, the original cold and wet air and condensation sink and are discharged from the moisture discharge port 13 in the lower cabinet 4, so that the drying function is realized, in addition, a worker can irregularly observe the working condition and the discharge condition of condensed water of each component in the lower cabinet 4 through the transparent observation window 19 on the front panel 9 of the lower cabinet 4, when the humidity drops, the humidity detector senses a control signal to the control circuit 11 of the fan 6 and the heating box 7, and the fan 6 and the heating box 7 are closed to stop working.
Referring to fig. 2, vertical strip-shaped through holes are formed in two side walls of the upper cabinet 3, and the holes enable air in the upper cabinet 3 to realize convection, so that ventilation and heat dissipation are achieved. Wherein, an air inlet 17 is arranged on the side wall close to the fan 6, and an iron protective net 18 is arranged at the air inlet 17 to prevent foreign matters from entering the fan 6 and damaging the fan. And four horizontal bar-shaped moisture discharging openings 13 are respectively arranged on two side walls of the lower layer cabinet body 4 close to the bottom, the moisture discharging openings 13 are obliquely upwards opened from outside to inside, so that the purpose is two, one is to prevent foreign matters from entering, and the other is to enable moisture and condensed water to be better discharged from the moisture discharging openings 13. In addition, the openings of the upper layer cabinet body 3 and the lower layer cabinet body 4 are respectively provided with a door 20, the doors 20 are respectively hinged with one side edge of the corresponding cabinet body, the door 20 is provided with a plane dustproof door lock 21, and an iron clamping groove is arranged at the middle position of the door of the lower layer cabinet body 4 facing to one surface in the cabinet body; referring to fig. 3, a transparent observation window 19 made of acrylic material is provided on a side of the door 20 of the lower cabinet 4 facing the outside of the cabinet and corresponding to the slot 22.
As shown in fig. 5, a humidity detector 12 for outputting a humidity detection signal, a comparison circuit 10 coupled to the humidity detector 12 for receiving the humidity detection signal and outputting a comparison signal, and a control circuit 11 coupled to the comparison circuit 10 for receiving the comparison signal and outputting a control signal to the blower 6 and the heating box 7 are disposed in the card slot 22.
The humidity detector 12 is a humidity sensor, the humidity sensor is RS485 in model, the comparison circuit 10 includes a resistor R1 with one end connected to the power source VCC, a slide rheostat RP2 with one end connected to the resistor R1 and the other end grounded, a voltage comparator a2 with a positive phase input end connected to the humidity sensor and a negative phase input end connected to the resistor R1 and the slide rheostat RP2, the voltage comparator a2 is LM393 in model, the control circuit 11 is a triode Q1 with a base connected to the output end of the voltage comparator a2 and a collector connected to the power source VCC, the triode Q1 is NPN in model and S9014, and an emitter of the triode Q1 is connected to the fan 6 and the heating box 7.
The implementation principle of the embodiment is as follows: in the period of frequent rain, when the humidity detector 12 detects that the humidity of the air in the lower cabinet 4 is increased, a control signal is transmitted to the control circuit 11 of the fan 6 and the heating box 7, at the moment, the fan 6 and the heating box 7 automatically start to work, the air is sent to the air outlet 8 from the air inlet 17 by the fan 6, the heating box 7 properly heats the air from the air outlet 8, the heated air is diffused into the lower cabinet 4 from the side surface of the heating box 7 to form a circulating air duct, electrical components and air in the electrical cabinet are dried, the original cold moisture and condensation sink and are discharged from the moisture discharge port 13 in the lower cabinet 4, so as to realize the drying function, in addition, the working condition and the condensed water discharge condition of each component in the lower cabinet 4 can be observed through the transparent observation window 19 on the front panel 9 of the lower cabinet 4 at irregular time, when the humidity is reduced, the moisture detector 12 senses a control signal to the control circuit 11 of the blower 6 and the heating box 7, and turns off the blower 6 and the heating box 7 to stop their operation, thereby completing the drying process.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides an regulator cubicle with drying function, includes the regulator cubicle cabinet body (1), base (2), its characterized in that: the electric cabinet is characterized in that a metal plate (5) which is horizontally placed is arranged in the cabinet body (1), the part of the electric cabinet body (1) which is positioned above the metal plate (5) is defined as an upper-layer cabinet body (3), the part of the electric cabinet body (1) which is positioned below the metal plate (5) is defined as a lower-layer cabinet body (4), one side of the electric cabinet body (1) which is provided with an opening is a front panel (9), one side of the metal plate (5) which is close to the lower-layer cabinet body is provided with a heating box (7), one inward side of the middle part of the front panel (9) of the lower-layer cabinet body (4) is provided with a clamping groove (22), an observation window (19) is arranged at the position of the front panel (9) of the lower-layer cabinet body (4) corresponding to the clamping groove (22), a fan (6) is arranged in, the air outlet (8) penetrates through the metal plate (5) and extends into the heating box (7), and the lower parts of two side walls of the lower-layer cabinet body (4) are provided with moisture exhaust ports (13);
the humidity detector (12) used for outputting humidity detection signals, the comparison circuit (10) coupled to the humidity detector (12) and used for receiving the humidity detection signals and outputting comparison signals, and the control circuit (11) coupled to the comparison circuit (10) and used for receiving the comparison signals and outputting control signals to the fan (6) and the heating box (7) are placed in the clamping groove (22).
2. The electrical cabinet with drying function according to claim 1, wherein: and heat dissipation vent holes (14) are formed in two side walls of the upper-layer cabinet body (3).
3. The electrical cabinet with drying function according to claim 1, wherein: the top of heating box (7) and the bottom fixed connection of metal sheet (5), heating box (7) liam is equipped with heating rod (15), heating rod (15) quantity is a plurality of and side by side align to grid in heating box (7), the lateral wall of heating box (7) is hollow out construction.
4. The electrical cabinet with drying function according to claim 1, wherein: an air inlet (17) is formed in the side wall, close to the fan (6), of the upper-layer cabinet body (3), and the air inlet (17) is communicated with the fan (6).
5. The electrical cabinet with drying function according to claim 4, wherein: the upper-layer cabinet body (3) is provided with a protective net (18) at the air inlet (17).
6. The electrical cabinet with drying function according to claim 1, wherein: the moisture exhaust openings (13) are arranged in parallel in an inclined upward manner from outside to inside in a plurality of numbers.
7. The electrical cabinet with drying function according to claim 1, wherein: the observation window (19) is made of transparent material.
8. The electrical cabinet with drying function according to claim 1, wherein: the opening part of the upper cabinet body (3) and the lower cabinet body (4) is provided with a door (20), and the doors (20) are hinged with the corresponding cabinet bodies respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921378365.2U CN210156757U (en) | 2019-08-22 | 2019-08-22 | Electrical cabinet with drying function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921378365.2U CN210156757U (en) | 2019-08-22 | 2019-08-22 | Electrical cabinet with drying function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210156757U true CN210156757U (en) | 2020-03-17 |
Family
ID=69767148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921378365.2U Expired - Fee Related CN210156757U (en) | 2019-08-22 | 2019-08-22 | Electrical cabinet with drying function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210156757U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113154866A (en) * | 2021-05-08 | 2021-07-23 | 合肥英唐电子有限公司 | Dampproof and waterproof processing system and method for intelligent closestool electric control component |
| CN113851989A (en) * | 2021-11-10 | 2021-12-28 | 江西伟德智能电气有限公司 | Can dampproofing radiating switch board |
-
2019
- 2019-08-22 CN CN201921378365.2U patent/CN210156757U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113154866A (en) * | 2021-05-08 | 2021-07-23 | 合肥英唐电子有限公司 | Dampproof and waterproof processing system and method for intelligent closestool electric control component |
| CN113851989A (en) * | 2021-11-10 | 2021-12-28 | 江西伟德智能电气有限公司 | Can dampproofing radiating switch board |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200317 |