CN215863757U - Novel explosion-proof high temperature air conditioner - Google Patents
Novel explosion-proof high temperature air conditioner Download PDFInfo
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- CN215863757U CN215863757U CN202121932466.7U CN202121932466U CN215863757U CN 215863757 U CN215863757 U CN 215863757U CN 202121932466 U CN202121932466 U CN 202121932466U CN 215863757 U CN215863757 U CN 215863757U
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- fins
- air conditioner
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- dust
- sliding
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- 239000000428 dust Substances 0.000 claims abstract description 45
- 238000009434 installation Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 13
- 238000007493 shaping process Methods 0.000 claims description 12
- 239000007769 metal material Substances 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 15
- 238000004140 cleaning Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 230000002349 favourable effect Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 239000003245 coal Substances 0.000 description 5
- 238000005065 mining Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of air conditioners, and solves the technical problems of heat dissipation performance reduction and inconvenient cleaning of heat dissipation fins caused by dust attached to the heat dissipation fins in the prior art. The novel explosion-proof high-temperature air conditioner has the advantages of automatically removing dust and conveniently assembling and disassembling the radiating fins.
Description
Technical Field
The utility model relates to the technical field of air conditioners, in particular to a novel explosion-proof high-temperature air conditioner.
Background
Air conditioners, i.e., air conditioners, of the hanging type are units for providing a space area (generally enclosed) with a temperature change of process air. Its function is to regulate the temperature, humidity, cleanliness and air flow rate of the air in the room (or closed space, zone) to meet the requirements of human body comfort or technological process, and in 1930, the room air conditioner was first developed in the united states. Since then, japan developed a floor type air conditioner (1936), a window type air conditioner (1953), an air-cooled heat pump type air conditioner (1960), and a split type air conditioner (1961). In the 40 s, rotary compressors for air conditioners were successfully developed in the united states. In the 70 s, air conditioners manufactured in japan had widely used rotary compressors, thereby reducing the volume and weight and improving the cooling capacity. In the early 80 s, the frequency conversion control of the air conditioner compressor is realized in Japan, so that the comfort of the air conditioner is improved, and the energy is saved.
With the increase of the coal mining depth, the coal mining safety problem is increasingly aggravated, the production of a mine is severely restricted, and the coal mining safety problem becomes one of important factors restricting the coal mining safety production. The existing air conditioner is an air conditioner, the air conditioner can be used for conditioning air in a closed environment, but the air conditioners do not have explosion-proof performance, and are not suitable for mining in mine holes, the air conditioner structure is complex and precise, in places with complex production environments such as mine holes, dust and chips are extremely easy to damage or even scrap the air conditioner, the service life of the air conditioner is influenced, the air conditioner is not beneficial to saving production cost, the dust is adhered to the surface of a radiating fin, the radiating performance is reduced, a cooled object can be burnt at high temperature in serious conditions, the dust of the radiating fin is clean and inconvenient, and under the application condition of fan enhanced radiation, the deposited dust can be blown out by the radiating fan, so that the human health is influenced.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a novel explosion-proof high-temperature air conditioner, which is used for solving the technical problems that the heat dissipation performance is reduced and the heat dissipation fins are inconvenient to clean due to the fact that dust is attached to the heat dissipation fins.
The embodiment of the utility model provides a novel explosion-proof high-temperature air conditioner, which comprises a shell, a filter screen, a compressor, an evaporative heat exchanger, a throttle valve, an evaporative fan and a condenser, wherein the filter screen, the compressor, the evaporative heat exchanger, the throttle valve, the evaporative fan and the condenser are arranged on the upper part of an evaporative radiator, a radiating fin group is arranged on the evaporative radiator, the radiating fin group comprises an installation shaping plate and a plurality of radiating fins, the radiating fins comprise a first fin and a second fin, the first fin and the second fin are jointed and connected, a convex sliding groove is formed in the installation shaping plate, one end of each radiating fin is arranged in the sliding groove in a sliding manner, the first fin and the second fin which are jointed and arranged in each group are arranged in the same sliding groove in a sliding manner, L-shaped connecting plates matched with the sliding grooves are arranged at the sliding ends of the first fin and the second fin in the same group, the connecting plates of the first fin and the second fin are respectively filled in a half space of the sliding grooves, the first fin and the second fin are respectively made of two metal materials with different thermal expansion coefficients.
The working principle and the working process are as follows:
when the radiating fin group is not used in daily life, the structure is kept stable, and when the temperature changes in the working process, the first fin and the second fin deform to different degrees and change the shape of the first fin and the second fin, so that the first fin and the second fin are in a continuous motion state, the effect of brushing dust is achieved, and the dust is prevented from being accumulated; meanwhile, the deformed first fin and the deformed second fin can be bent and deformed, so that the contact area with air is increased, and the heat dissipation effect is better; the cooperation of connecting plate and sliding tray makes things convenient for dismouting radiating fin, when radiating fin goes wrong, can take off radiating fin from the installation stereotype board and change.
Furthermore, the radiating fins are provided with protrusions and grooves which are in isosceles trapezoid structures, and the protrusions and the grooves are the same in shape and size.
The contact area of the radiating fins and the air is increased due to the arrangement of the protrusions and the grooves, and the first fins and the second fins are attached to each other conveniently.
Furthermore, a plurality of flanging holes are formed in the radiating fins, and the flanging holes in different radiating fins in the same radiating fin group are in the same position.
And the flanging hole is used for inserting the heat pipe.
Furthermore, the adjacent two radiating fin groups are locally overlapped, attached and connected through the protrusions and the grooves on the radiating fins vertically arranged between the adjacent two radiating fin groups, so that the cooperative operation of the radiating fin groups is realized.
The two radiating fin groups are combined together in a longitudinal overlapped arrangement mode, so that a better radiating effect is achieved.
Furthermore, the installation shaping plates of two adjacent radiating fin groups are tightly attached, and a part of connecting ends of the radiating fins on one radiating fin group is inserted into the sliding groove of the installation shaping plate of the other radiating fin group in a sliding manner.
The two radiating fin groups are connected by inserting the radiating fins on the two installation shaping plates.
Further, air intake and air outlet have been seted up on the casing, the horizontal both sides of air intake of casing are equipped with two vertical mounting brackets, two first spout and second spout have all been seted up to the vertical relative side of mounting bracket, the second spout sets up between first spout and casing, two it is equipped with dust keeper, two to slide between the second spout it is equipped with the dust removal device to slide between the first spout, the equal upper end opening of first spout and second spout, the lower extreme seals.
In the normal use process of the air conditioner, the dustproof device is arranged at the air inlet, and when the air conditioner sucks air in a mine, dust and debris carried in air flow are filtered, so that the dust and the debris are prevented from entering the air conditioner, the air conditioner is prevented from being damaged, or the service life of the air conditioner is shortened; through the setting of second spout on the mounting bracket, be favorable to dust keeper's dismouting, only need take out from the top and insert, dust cleaning device's setting is favorable to falling the accumulational dust clearance on the dust keeper simultaneously, prevents that dust and piece from blockking up the air intake.
Furthermore, the dustproof device comprises a rectangular frame and a dustproof net arranged in the rectangular frame, and two ends of the rectangular frame are respectively connected with the second sliding grooves on two sides in a sliding mode.
The setting of rectangular frame is favorable to finalizing the design of dust screen fixed, is favorable to dust keeper to slide from top to bottom in the second spout simultaneously, is favorable to dismantling and installing.
Further, the dust cleaning device comprises a fixed rod, rectangular sliding blocks matched with the width of the first sliding groove are formed at the two ends of the fixed rod, the rectangular sliding blocks are arranged in the first sliding groove in a sliding mode, bristles are arranged on the fixed rod, and the bristles are abutted to the dust screen.
The effect of dead lever is for installing the brush hair and with the cooperation of first spout, the setting of rectangle slider is favorable to preventing that the dead lever from overturning at the slip in-process to change the direction of brush hair, influence the effect of deashing, the brush hair is used for cleaning the dust on the dust screen.
In conclusion, the beneficial effects of the utility model are as follows:
according to the utility model, the radiating fins are heated and automatically bent and vibrated by a way that the two radiating fins with different thermal expansion coefficients are attached, so that dust is shaken off and automatic ash removal is realized;
through the arrangement of the bulges and the grooves, the contact area with air is increased, the heat dissipation effect is better, and meanwhile, the overlapping connection of the heat dissipation fins is facilitated;
different radiating fins are combined together, so that the radiating area is increased, and meanwhile, the radiating fins are connected with the installation shaping plate in a sliding manner, so that the radiating fins can be quickly disassembled, assembled and replaced; the problem that the explosion-proof air conditioner cannot refrigerate when the ambient temperature exceeds 43 ℃ or the surface temperature of an outdoor unit of the air conditioner exceeds 43 ℃ in the prior art is solved, the problem that the service life of the air-conditioning radiating fins of the explosion-proof air conditioner in the prior art is very short when corrosive gas or corrosive dust exists is solved, and the problem that the service life of the air-conditioning shell of the explosion-proof air conditioner in the prior art is very short when the corrosive gas or the corrosive dust exists is solved.
Drawings
FIG. 1 is a front view of the overall structure of the present invention;
FIG. 2 is a front view of the structure of the fin assembly of the present invention;
FIG. 3 is a top view of the structure of the fin assembly of the present invention;
FIG. 4 is a schematic view of a connection structure of two fin groups according to the present invention;
FIG. 5 is a schematic view of another connection structure of two fin groups according to the present invention;
FIG. 6 is a schematic structural view of the dust-proof device of the present invention;
FIG. 7 is a schematic structural view of a mount of the present invention;
FIG. 8 is a schematic view of the dust removing device of the present invention.
In the figure: 1. a housing; 2. an air outlet; 3. an air inlet; 4. a mounting frame; 41. a first chute; 42. a second chute; 5. a dust cleaning device; 51. fixing the rod; 52. a rectangular slider; 53. brushing; 6. a dust-proof device; 61. a rectangular frame; 62. a dust screen; 7. a set of heat dissipating fins; 71. installing a shaping plate; 711. a sliding groove; 72. a heat dissipating fin; 721. a first fin; 722. a second fin; 723. a protrusion; 724. a groove; 73. and (4) flanging holes.
Detailed Description
Example 1:
as shown in fig. 1-4, a novel explosion-proof high-temperature air conditioner comprises a housing 1, a filter screen, a compressor, an evaporative heat exchanger, a throttle valve, an evaporative fan and a condenser, wherein the filter screen, the compressor, the evaporative heat exchanger, the throttle valve, the evaporative fan and the condenser are arranged on the upper portion of an evaporative radiator, a heat-radiating fin group 7 is arranged on the evaporative radiator, the heat-radiating fin group 7 comprises an installation shaping plate 71 and a plurality of heat-radiating fins 72, each heat-radiating fin 72 comprises a first fin 721 and a second fin 722, the first fin 721 and the second fin 722 are attached to each other and connected, a convex sliding groove 711 is arranged on the installation shaping plate 71, one end of each heat-radiating fin 72 is slidably arranged in the sliding groove 711, each group of attached first fin 721 and second fin 722 is slidably arranged in the same sliding groove 711, the sliding ends of the first fin 721 and the second fin 722 in the same group are both provided with L-shaped connecting plates which are matched with the sliding groove 711, the connecting plates of the first fin 721 and the second fin 722 are respectively filled in a half of the sliding groove 711, the first fin 721 and the second fin 722 are made of two metal materials having different thermal expansion coefficients, respectively.
The first fins 721 are aluminum fins and are in the shape of large-pitch high-efficiency corrugated sheets, so that the heat exchange area and air disturbance on the air side are increased, and the heat transfer coefficient and the heat exchange quantity are improved. The aluminum fins are made of ultrathin aluminum foils with the thickness of 0.115mm, and the heat transfer coefficient and the heat exchange quantity are improved by more than 15% compared with those of a common heat exchanger, so that the explosion-proof air conditioner for the cabinet coal mine has the advantages of high efficiency and energy saving.
The second fins 722 are copper fins, and have the same thickness and shape as the first fins 721, so that the heat exchange and heat dissipation efficiency is improved by matching the second fins and the first fins.
The working principle and the working process are as follows:
when the heat dissipation fin group 7 is not used in daily life, the structure is kept stable, and when the temperature changes in the working process, the first fin 721 and the second fin 722 deform to different degrees and change the shape of the first fin 721 and the second fin 722, so that the first fin 721 and the second fin 722 are in a continuous motion state, the effect of brushing dust is achieved, and the dust is prevented from being accumulated; meanwhile, the deformed first fin 721 and the deformed second fin 722 are bent and deformed, so that the contact area with air is increased, and the heat dissipation effect is better; the connecting plate is matched with the sliding groove 711, so that the radiating fins 72 can be conveniently disassembled and assembled, and when the radiating fins 72 have problems, the radiating fins 72 can be taken down from the installation shaping plate 71 and replaced.
The heat dissipation fin 72 is provided with a protrusion 723 and a groove 724 which are in an isosceles trapezoid structure, and the shape and the size of the protrusion 723 are the same as those of the groove 724.
The arrangement of the protrusion 723 and the groove 724 increases the contact area of the heat dissipation fin 72 with air, and facilitates the attachment of the first fin 721 and the second fin 722.
Four flanging holes 73 are formed in the radiating fins 72, and the flanging holes 73 in different radiating fins 72 in the same radiating fin group 7 are in the same position.
And the flanging hole 73 is used for inserting the heat pipe.
The adjacent two cooling fin groups 7 are partially overlapped, attached and connected through the protrusions 723 and the grooves 724 on the cooling fins 72 vertically arranged between the two cooling fin groups 7, so that the cooperative operation of the cooling fin groups 7 is realized.
The two radiating fin groups 7 are combined together in a longitudinal overlapping arrangement mode, so that a better radiating effect is achieved.
Example 2:
as shown in fig. 5, in this embodiment, in addition to embodiment 1, the installation and calibration plates 71 of two adjacent fin groups 7 are closely attached to each other, and a part of the connection ends of the heat dissipation fins 72 of the left fin group 7 is slidably inserted into the sliding grooves 711 of the installation and calibration plates 71 of the right fin group 7.
The two heat radiating fin groups 7 are connected by inserting the heat radiating fins 72 on the two mounting and sizing plates 71.
Example 3:
as shown in fig. 6 to 8, in this embodiment, on the basis of embodiment 1, the housing 1 is provided with the air inlet 3 and the air outlet 2, two vertical mounting brackets 4 are disposed on two horizontal sides of the air inlet 3 of the housing 1, the opposite side surfaces of the two mounting brackets 4 are vertically provided with the first sliding groove 41 and the second sliding groove 42, the second sliding groove 42 is disposed between the first sliding groove 41 and the housing 1, the two second sliding grooves 42 are slidably provided with the dust-proof device 6, the two first sliding grooves 41 are slidably provided with the dust-removing device 5, the first sliding groove 41 and the second sliding groove 42 are both open at the upper end and closed at the lower end.
In the normal use process of the air conditioner, the dustproof device 6 is arranged at the air inlet 3, and when the air conditioner sucks air in a mine, dust and debris carried in air flow are filtered, so that the dust and the debris are prevented from entering the air conditioner, the air conditioner is prevented from being damaged, or the service life of the air conditioner is shortened; through the setting of second spout 42 on mounting bracket 4, be favorable to dust keeper 6's dismouting, only need take out from the top and insert, dust keeper 5's setting simultaneously is favorable to falling the accumulational dust clearance on dust keeper 6, prevents that dust and piece from blockking up air intake 3.
The dustproof device 6 comprises a rectangular frame 61 and a dustproof net 62 arranged in the rectangular frame 61, wherein two ends of the rectangular frame 61 are respectively connected with the second sliding grooves 42 on two sides in a sliding manner.
The rectangular frame 61 is beneficial to fixing the dustproof net 62 in a fixed shape, and is beneficial to the dustproof device 6 to slide up and down in the second sliding groove 42, so that the dustproof device is convenient to detach and mount.
The dust cleaning device 5 comprises a fixed rod 51, rectangular sliding blocks 52 matched with the first sliding groove 41 in width are formed at two ends of the fixed rod 51, the rectangular sliding blocks 52 are arranged in the first sliding groove 41 in a sliding mode, bristles 53 are arranged on the fixed rod 51, and the bristles 53 are abutted to a dust screen 62.
The effect of dead lever 51 is for installing brush hair 53 and cooperating with first spout 41, and the setting of rectangle slider 52 is favorable to preventing that dead lever 51 from overturning at the slip in-process to change the direction of brush hair 53, influence the effect of deashing, brush hair 53 is used for sweeping the dust on the dust screen 62.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A novel explosion-proof high-temperature air conditioner comprises a shell, a filter screen, a compressor, an evaporative heat exchanger, a throttle valve, an evaporative fan and a condenser, wherein the filter screen, the compressor, the evaporative heat exchanger, the throttle valve, the evaporative fan and the condenser are arranged on the upper portion of an evaporative radiator, the evaporative radiator is provided with a radiating fin group, the radiating fin group comprises an installation shaping plate and a plurality of radiating fins, the radiating fins comprise first fins and second fins, the first fins and the second fins are attached and connected with each other, the installation shaping plate is provided with convex sliding grooves, one ends of the radiating fins are slidably arranged in the sliding grooves, the first fins and the second fins which are attached and arranged in each group are slidably arranged in the same sliding grooves, the sliding ends of the first fins and the second fins which are in the same group are respectively provided with L-shaped connecting plates matched with the sliding grooves, and the connecting plates of the first fins and the second fins are respectively filled in half space of the sliding grooves, the first fin and the second fin are respectively made of two metal materials with different thermal expansion coefficients.
2. The novel explosion-proof high-temperature air conditioner as claimed in claim 1, wherein the heat dissipating fins are provided with protrusions and grooves in an isosceles trapezoid structure, and the protrusions and the grooves are the same in shape and size.
3. The new explosion-proof high temperature air conditioner as claimed in claim 1, wherein said fins have a plurality of flanged holes, and the flanged holes on different fins in the same fin group are all located at the same position.
4. The novel explosion-proof high-temperature air conditioner as claimed in claim 2, wherein the adjacent two cooling fin groups are partially overlapped, attached and connected through the protrusions and the grooves on the cooling fins vertically arranged between the two cooling fin groups, so as to realize the cooperative operation of the cooling fin groups.
5. The novel explosion-proof high-temperature air conditioner according to claim 2, wherein the mounting and sizing plates of two adjacent cooling fin groups are tightly attached, and a part of the connecting end of the cooling fin on one cooling fin group is slidably inserted into the sliding groove of the mounting and sizing plate of the other cooling fin group.
6. The novel explosion-proof high-temperature air conditioner according to any one of claims 1 to 5, wherein the housing is provided with an air inlet and an air outlet, two vertical mounting frames are arranged on two horizontal sides of the air inlet of the housing, a first chute and a second chute are vertically arranged on opposite sides of the two mounting frames, the second chute is arranged between the first chute and the housing, a dust-proof device is arranged between the two second chutes in a sliding manner, a dust-removing device is arranged between the two first chutes in a sliding manner, and the first chute and the second chute are both open at the upper end and closed at the lower end.
7. The novel explosion-proof high-temperature air conditioner as claimed in claim 6, wherein the dust-proof device comprises a rectangular frame and a dust-proof net arranged in the rectangular frame, and two ends of the rectangular frame are respectively connected with the second sliding grooves on two sides in a sliding manner.
8. The novel explosion-proof high-temperature air conditioner as claimed in claim 6, wherein the dust removing device comprises a fixing rod, rectangular sliding blocks matched with the width of the first sliding groove are formed at both ends of the fixing rod, the rectangular sliding blocks are slidably arranged in the first sliding groove, and bristles are arranged on the fixing rod and are abutted to the dust screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121932466.7U CN215863757U (en) | 2021-08-16 | 2021-08-16 | Novel explosion-proof high temperature air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121932466.7U CN215863757U (en) | 2021-08-16 | 2021-08-16 | Novel explosion-proof high temperature air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215863757U true CN215863757U (en) | 2022-02-18 |
Family
ID=80240040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121932466.7U Expired - Fee Related CN215863757U (en) | 2021-08-16 | 2021-08-16 | Novel explosion-proof high temperature air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215863757U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117663880A (en) * | 2024-01-31 | 2024-03-08 | 哈尔滨空调股份有限公司 | Flying wing type fin and application of flying wing type fin in air cooler |
| CN118487102A (en) * | 2024-07-15 | 2024-08-13 | 长春中科长光时空光电技术有限公司 | Laser packaging structure |
-
2021
- 2021-08-16 CN CN202121932466.7U patent/CN215863757U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117663880A (en) * | 2024-01-31 | 2024-03-08 | 哈尔滨空调股份有限公司 | Flying wing type fin and application of flying wing type fin in air cooler |
| CN117663880B (en) * | 2024-01-31 | 2024-04-30 | 哈尔滨空调股份有限公司 | Flying wing type fin and application of flying wing type fin in air cooler |
| CN118487102A (en) * | 2024-07-15 | 2024-08-13 | 长春中科长光时空光电技术有限公司 | Laser packaging structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230112 Address after: 473000 No. 66, group 1, Sun Zhuang, poqiao, Jingang street, Wolong District, Nanyang City, Henan Province Patentee after: Nanyang Hengju Electrical Equipment Co.,Ltd. Address before: 473000 No. 160, Maji village, Qinghua Town, Wolong District, Nanyang City, Henan Province Patentee before: Wei Ming |
|
| 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: 20220218 |