CN217445728U - Regulator cubicle convenient to heat dissipation - Google Patents
Regulator cubicle convenient to heat dissipation Download PDFInfo
- Publication number
- CN217445728U CN217445728U CN202221453645.7U CN202221453645U CN217445728U CN 217445728 U CN217445728 U CN 217445728U CN 202221453645 U CN202221453645 U CN 202221453645U CN 217445728 U CN217445728 U CN 217445728U
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- Prior art keywords
- heat dissipation
- cavity
- cabinet
- cabinet body
- radiator unit
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- Expired - Fee Related
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 111
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000009434 installation Methods 0.000 claims abstract description 34
- 238000009423 ventilation Methods 0.000 claims description 16
- 239000000428 dust Substances 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 238000001816 cooling Methods 0.000 abstract description 9
- 238000000638 solvent extraction Methods 0.000 abstract description 3
- 239000003570 air Substances 0.000 description 28
- 239000002826 coolant Substances 0.000 description 18
- 239000007788 liquid Substances 0.000 description 16
- 238000007789 sealing Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
The utility model discloses a regulator cubicle convenient to heat dissipation, the intelligent cabinet temperature adjusting device comprises a cabinet body, the cabinet body is opened and shut and is connected with the cabinet door, and the internal portion of cabinet divide into installation cavity and heat dissipation chamber, the installation cavity is used for connecting components and parts, the heat dissipation chamber is connected with radiator unit, radiator unit includes water radiator unit and wind radiator unit, water radiator unit includes cooling tube, water pump and fin, the cooling tube passes the cabinet body, cabinet external portion and connection in the cooling tube are located to water pump and fin, wind radiator unit includes a plurality of fans, the fan is connected in the heat dissipation chamber. The utility model discloses be heat dissipation chamber and installation cavity with cabinet body internal partitioning for components and parts and heat abstractor separately sets up, under the prerequisite that does not influence components and parts use, existing fine dustproof effect can also improve the radiating efficiency, through setting up water radiator unit and wind radiator unit, according to the temperature of reality, can select multiple mode to dispel the heat, guarantees components and parts normal operating.
Description
Technical Field
The utility model belongs to the electrical equipment field, concretely relates to regulator cubicle convenient to heat dissipation.
Background
A large number of electrical modules are usually disposed inside the electrical cabinet, and these electrical modules can generate a large amount of heat during the working process, and the heat accumulation can cause the temperature in the electrical cabinet to rise, thereby affecting the normal operation of the electrical cabinet. In order to dissipate the heat in time, the cabinet body of the electric appliance cabinet is generally provided with heat dissipation holes, but the arrangement of the heat dissipation holes alone is difficult to dissipate out of the electric appliance cabinet in time, the heat emitted by the electric appliance module in the electric appliance cabinet can generate certain hot air flow in the electric appliance cabinet, the hot air flow can only flow by the temperature difference between the hot air flow and the outside and is dissipated out of the electric appliance cabinet through the heat dissipation holes alone, the heat dissipation mode can not meet the heat dissipation requirement of the electric appliance cabinet in many times, and certain damage can be brought to the electric appliance module in the electric appliance cabinet in the past.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a regulator cubicle convenient to heat dissipation through the improvement of electric appliance cabinet structure for the radiating effect of electric appliance cabinet is better.
In order to solve the above problems existing in the prior art, the utility model discloses the technical scheme who adopts is:
the utility model provides an regulator cubicle convenient to heat dissipation, includes the cabinet body, cabinet body open and shut is connected with the cabinet door, and the internal portion of cabinet divide into installation cavity and heat dissipation chamber, the installation cavity is used for connecting components and parts, the heat dissipation chamber is connected with radiator unit.
The heat dissipation assembly comprises a water heat dissipation assembly and an air heat dissipation assembly.
The water heat dissipation assembly comprises a heat dissipation pipe, a water pump and heat dissipation fins, the heat dissipation pipe penetrates through the cabinet body, and the water pump and the heat dissipation fins are arranged outside the cabinet body and connected to the heat dissipation pipe.
The wind heat dissipation assembly comprises a plurality of fans, and the fans are connected to the heat dissipation cavity.
With internal partition of cabinet for heat dissipation chamber and installation cavity for components and parts and heat abstractor separately set up, under the prerequisite that does not influence components and parts use, existing fine dustproof effect can also improve the radiating efficiency, through setting up water radiator unit and wind radiator unit, according to the temperature of reality, can select multiple mode to dispel the heat, guarantees components and parts normal operating.
Further, the installation cavity and the heat dissipation cavity are separated through the partition plate, the partition plate is provided with a plurality of air holes, and through setting up the air holes, the heat of the installation cavity can smoothly enter the heat dissipation cavity and dissipate heat in time, the installation cavity is internally connected with two support plates, the installation cavity is separated into a first cavity, a second cavity and a third cavity through the two support plates from top to bottom, the cabinet door comprises a first cabinet door corresponding to the first cavity, a second cabinet door corresponding to the second cavity and a third cabinet door corresponding to the third cavity, the interior of the installation cavity is designed into three cavities, and different components are separately placed.
Further, the first chamber, the second chamber and the third chamber are relatively independent and are communicated with the heat dissipation chamber, the cabinet door is provided with an air inlet which is connected with a dust screen and is arranged at the position below the cabinet door, the cabinet body can smoothly enter air and has better heat dissipation effect by arranging the air inlet, meanwhile, the dust screen is arranged at the air inlet, so that dust can be effectively prevented from entering the cavity on the premise of smooth air inlet, the service life of the electric element is prolonged, because the gas can flow upwards when heated, the gas inlet is arranged at the position below the cabinet door, the low-temperature gas is introduced to completely cool the electric elements from bottom to top, then the water enters the heat dissipation cavity through the vent hole, the cooling effect is better, the side wall of the cabinet body is connected with a ventilation box, the fan is arranged in the ventilation box, the ventilation box is arranged, so that the fan can be conveniently installed, and the ventilation box is connected with a dust screen.
Further, the cooling tube is including being located the inside inner tube in heat dissipation chamber and being located the outside outer tube in heat dissipation chamber, the inner tube is circuitous in the heat dissipation intracavity portion and is arranged, the outer tube is buckled at cabinet body outside and is arranged the inner tube circuitously, can furthest carry out the heat absorption, guarantees heat transfer, improves the radiating efficiency, with the outer tube buckle set up can, avoid too complicated, the reduction damage condition takes place.
Further, the both ends of outer tube are connected in the water pump for the radiating tube constitutes closed loop, the inner tube connection has a plurality of conducting strips, the conducting strip passes the air vent, one side of the cabinet body is located to the ventilation box, the outer tube is arranged in the opposite side of the cabinet body, and through setting up the conducting strip, the back is installed to components and parts, can make the direct and components and parts contact of conducting strip, and the heat that components and parts produced directly transmits the radiating tube through the conducting strip, improves the radiating efficiency. And set up outer tube and ventilation box respectively in the both sides of the cabinet body, two kinds of radiating mode can not influence each other.
Further, the top of outer tube is connected with the inlet tube, the inlet tube can be dismantled and be connected with the sealing plug, the one end that is close to the water pump of outer tube is connected with the drain pipe, water piping connection has the valve, through setting up inlet tube and drain pipe, when the coolant liquid temperature was too high, can guarantee the radiating efficiency through changing the coolant liquid. Through setting up the sealing plug, the coolant liquid is changed and is accomplished the back, and timely shutoff inlet tube avoids impurity to get into the cooling tube. Through setting up the valve, be convenient for change the work of coolant liquid.
The utility model has the advantages that: with internal partition of cabinet for heat dissipation chamber and installation cavity for components and parts and heat abstractor separately set up, under the prerequisite that does not influence components and parts use, existing fine dustproof effect can also improve the radiating efficiency, through setting up water radiator unit and wind radiator unit, according to the temperature of reality, can select multiple mode to dispel the heat, guarantees components and parts normal operating.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a right side view of fig. 2.
Fig. 4 is a sectional view taken along the line a-a in fig. 2.
Fig. 5 is a partially enlarged view of a portion B in fig. 4.
Fig. 6 is a sectional view taken along the direction C-C in fig. 3.
Fig. 7 is a sectional view taken in the direction D-D of fig. 3.
In the figure: 1-a cabinet body; 11-a support plate; 12-a partition plate; 13-a vent hole; 21-a first cabinet door; 22-a second cabinet door; 23-a third cabinet door; 31-an air inlet; 32-dust screen; 4-a water pump; 5-radiating pipes; 51-a heat sink; 52-a thermally conductive sheet; 53-water inlet pipe; 54-a drain pipe; 6-a ventilation box; 81-a first chamber; 82-a second chamber; 83-a third chamber; 84-heat dissipation chamber.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and reference numerals.
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
The terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
Example 1:
as shown in fig. 1 to 4, the electrical cabinet convenient for heat dissipation comprises a cabinet body 1, wherein the cabinet body 1 is connected with a cabinet door in an opening and closing manner, the cabinet body 1 is internally divided into an installation cavity and a heat dissipation cavity 84, the installation cavity is used for connecting components, and the heat dissipation cavity 84 is connected with a heat dissipation assembly.
The heat dissipation assembly comprises a water heat dissipation assembly and an air heat dissipation assembly.
The water heat dissipation assembly comprises a heat dissipation pipe 5, a water pump 4 and a heat dissipation fin 51, wherein the heat dissipation pipe 5 penetrates through the cabinet body 1, and the water pump 4 and the heat dissipation fin 51 are arranged outside the cabinet body 1 and connected with the heat dissipation pipe 5.
The wind heat dissipation assembly includes a plurality of fans connected to the heat dissipation chamber 84.
With cabinet body 1 internal partitioning for heat dissipation chamber 84 and installation cavity for components and parts and heat abstractor separately sets up, under the prerequisite that does not influence components and parts and use, existing fine dustproof effect can also improve the radiating efficiency, through setting up water radiator unit and wind radiator unit, according to the temperature of reality, can select multiple mode to dispel the heat, guarantees components and parts normal operating.
During the use, according to the temperature of components and parts, can select different heat dissipation modes, can water radiator unit independent work, wind radiator unit independent work, also can water radiator unit and wind radiator unit simultaneous working.
Example 2:
as shown in fig. 1 to 7, the electrical cabinet convenient for heat dissipation comprises a cabinet body 1, wherein the cabinet body 1 is connected with a cabinet door in an opening and closing manner, the cabinet body 1 is internally divided into an installation cavity and a heat dissipation cavity 84, the installation cavity is used for connecting components, and the heat dissipation cavity 84 is connected with a heat dissipation assembly.
The heat dissipation assembly comprises a water heat dissipation assembly and an air heat dissipation assembly.
The water heat dissipation assembly comprises a heat dissipation pipe 5, a water pump 4 and a heat dissipation fin 51, wherein the heat dissipation pipe 5 penetrates through the cabinet body 1, and the water pump 4 and the heat dissipation fin 51 are arranged outside the cabinet body 1 and connected with the heat dissipation pipe 5.
The wind heat dissipation assembly includes a plurality of fans connected to the heat dissipation chamber 84.
With cabinet body 1 internal partitioning for heat dissipation chamber 84 and installation cavity for components and parts and heat abstractor separately set up, under the prerequisite that does not influence components and parts use, existing fine dustproof effect can also improve the radiating efficiency, through setting up water radiator unit and wind radiator unit, according to the temperature of reality, can select multiple mode to dispel the heat, guarantees components and parts normal operating.
During the use, according to the temperature of components and parts, can select different heat dissipation modes, can water radiator unit independent work, wind radiator unit independent work, also can water radiator unit and wind radiator unit simultaneous working.
The installation cavity and the heat dissipation cavity 84 are separated by a partition plate 12, and the partition plate 12 is provided with a plurality of vent holes 13.
Through setting up air vent 13 for the heat of installation cavity can get into in the heat dissipation chamber 84 smoothly, in time dispels the heat.
When the heat dissipation assembly is installed, and then the partition plate 12 is installed, so that the heat conduction sheet 52 penetrates through the vent hole 13.
The mounting cavity is internally connected with two support plates 11, the mounting cavity is divided into a first cavity 81, a second cavity 82 and a third cavity 83 by the two support plates 11 from top to bottom, and the cabinet doors comprise a first cabinet door 21 arranged corresponding to the first cavity 81, a second cabinet door 22 arranged corresponding to the second cavity 82 and a third cabinet door 23 arranged corresponding to the third cavity 83.
The interior of the mounting cavity is designed into three cavities, and different components are separately placed.
The first chamber 81, the second chamber 82 and the third chamber 83 are relatively independent, but are communicated with the heat dissipation chamber.
The cabinet door is provided with an air inlet 31, and the air inlet 31 is connected with a dust screen 32.
The air inlet 31 is arranged at a position below the cabinet door.
Through setting up air inlet 31, the cabinet body 1 admits air more smoothly, and the radiating effect is better, sets up dust screen 32 at air inlet 31 simultaneously, admits air under the smooth prerequisite, can prevent effectively that the dust from getting into the cavity, extension electrical component's life.
Because the gas can flow upwards when being heated, the gas inlet 31 is arranged at the position below the cabinet door, the low-temperature gas is totally cooled from bottom to top after entering, and then passes through the vent hole 13 to enter the heat dissipation cavity 84, so that the cooling effect is better.
When air is fed, low-temperature gas enters from the air inlet 31, then the temperature of the component is reduced, and the gas gradually moves upwards along with the temperature rise until the top of the chamber where the gas is located enters the heat dissipation chamber 84.
The lateral wall of the cabinet body 1 is connected with a ventilation box 6, and the fan is arranged in the ventilation box 6.
Through setting up ventilation box 6, the installation of the fan of being convenient for.
The ventilation box 6 is connected with a dust screen 32.
The heat dissipation pipe 5 comprises an inner pipe located inside the heat dissipation cavity 84 and an outer pipe located outside the heat dissipation cavity 84, the inner pipe is arranged inside the heat dissipation cavity 84 in a winding way, and the outer pipe is arranged outside the cabinet body 1 in a bending way.
The inner pipe is arranged in a roundabout mode, heat absorption can be conducted to the greatest extent, heat transfer is guaranteed, heat dissipation efficiency is improved, the outer pipe is bent, the outer pipe is prevented from being too complex, and damage is reduced.
When the coolant liquid flows through the inner tube, the heat in the heat dissipation cavity 84 is absorbed, so that the temperature of the coolant liquid rises, when the coolant liquid flows to the outer tube, the coolant liquid is dissipated to the ambient air, the temperature of the coolant liquid is reduced, then the coolant liquid enters the inner tube to absorb heat, and the temperature of the installation cavity is guaranteed not to be too high.
The two ends of the outer pipe are connected with the water pump 4, so that the radiating pipe 5 forms a closed loop;
the inner tube is connected with a plurality of heat-conducting fins 52, and the heat-conducting fins 52 pass through the vent holes 13.
The ventilation box 6 is arranged on one side of the cabinet body 1, and the outer pipe is arranged on the other side of the cabinet body 1.
Through setting up conducting strip 52, the back is installed to components and parts, can make conducting strip 52 direct and components and parts contact, and the heat that components and parts produced directly transmits cooling tube 5 through conducting strip 52, improves the radiating efficiency. And set up outer tube and ventilation box 6 respectively in the both sides of the cabinet body 1, two kinds of radiating mode can not influence each other.
During the installation, install components and parts earlier, wait that the components and parts installation back that finishes for conducting strip 52 is adjusted to conducting strip 52 and components and parts contact, and the easy heating portion contact of key and components and parts can directly be conducted to the inner tube through conducting strip 52 when components and parts produce high temperature.
The top of the outer pipe is connected with a water inlet pipe 53, and the water inlet pipe 53 is detachably connected with a sealing plug (not shown in the figure);
the end of the outer pipe close to the water pump 4 is connected to a drain pipe 54, and the drain pipe 54 is connected to a valve (not shown).
By providing the water inlet pipe 53 and the water outlet pipe 54, when the temperature of the coolant is excessively high, the heat dissipation efficiency can be ensured by replacing the coolant. Through setting up the sealing plug, the coolant liquid is changed and is accomplished the back, and timely shutoff inlet tube 53 avoids impurity to get into cooling tube 5. Through setting up the valve, be convenient for change the work of coolant liquid.
The specific working principle is as follows:
during the use, according to the temperature of components and parts, can select different heat dissipation modes, can water radiator unit independent work, wind radiator unit independent work, also can water radiator unit and wind radiator unit simultaneous working.
During the installation, earlier with radiator unit installation, then installation division board 12 makes conducting strip 52 pass from air vent 13 during the installation, then installs components and parts, waits that the components and parts installation back that finishes, adjusts conducting strip 52 for conducting strip 52 and components and parts contact, and the easy heating part contact of key and components and parts can directly conduct to the inner tube through conducting strip 52 when components and parts produce high temperature.
The wind heat dissipation assembly works, low-temperature gas enters from the air inlet 31, then the temperature of the components is reduced, the gas gradually moves upwards along with the rise of the temperature until the top of the chamber where the low-temperature gas is located enters the heat dissipation cavity 84, and finally the low-temperature gas is discharged out of the cabinet body 1 through the fan.
The water radiator unit work, when the coolant liquid flows through the inner tube, absorb the heat in the heat dissipation chamber 84 for coolant liquid temperature risees, when the coolant liquid flows to the outer tube, dispels the heat to the air around, makes coolant liquid temperature reduce, then reentrant inner tube absorbs heat, so guarantees that the temperature of installation cavity can not be too high.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (9)
1. The utility model provides an regulator cubicle convenient to heat dissipation which characterized in that: the cabinet comprises a cabinet body (1), wherein a cabinet door is connected to the cabinet body (1) in an opening and closing manner, the interior of the cabinet body (1) is divided into an installation cavity and a heat dissipation cavity (84), the installation cavity is used for connecting components, the heat dissipation cavity (84) is connected with a heat dissipation assembly, and the heat dissipation assembly comprises a water heat dissipation assembly and a wind heat dissipation assembly;
the water radiating assembly comprises a radiating pipe (5), a water pump (4) and radiating fins (51), the radiating pipe (5) penetrates through the cabinet body (1), and the water pump (4) and the radiating fins (51) are arranged outside the cabinet body (1) and connected with the radiating pipe (5);
the wind heat dissipation assembly includes a plurality of fans connected to a heat dissipation chamber (84).
2. The electrical cabinet facilitating heat dissipation of claim 1, wherein: the mounting cavity and the heat dissipation cavity (84) are separated by a partition plate (12), and the partition plate (12) is provided with a plurality of vent holes (13).
3. The electrical cabinet facilitating heat dissipation of claim 1, wherein: the two support plates (11) are connected inside the installation cavity, and the installation cavity is divided into a first cavity (81), a second cavity (82) and a third cavity (83) by the two support plates (11) from top to bottom;
the cabinet doors comprise a first cabinet door (21) arranged corresponding to the first cavity (81), a second cabinet door (22) arranged corresponding to the second cavity (82), and a third cabinet door (23) arranged corresponding to the third cavity (83).
4. The electrical cabinet facilitating heat dissipation of claim 1, wherein: the cabinet door is provided with an air inlet (31), and the air inlet (31) is connected with a dust screen (32).
5. The electrical cabinet facilitating heat dissipation of claim 2, wherein: the lateral wall of the cabinet body (1) is connected with a ventilation box (6), and the fan is arranged in the ventilation box (6).
6. The electrical cabinet facilitating heat dissipation of claim 5, wherein: the heat dissipation pipe (5) comprises an inner pipe located inside the heat dissipation cavity (84) and an outer pipe located outside the heat dissipation cavity (84), the inner pipe is arranged in the heat dissipation cavity (84) in a winding manner, and the outer pipe is arranged outside the cabinet body (1) in a bending manner.
7. The electrical cabinet facilitating heat dissipation of claim 6, wherein: and two ends of the outer pipe are communicated with the same water pump (4).
8. The electrical cabinet facilitating heat dissipation of claim 6, wherein: the inner tube is connected with a plurality of heat-conducting fins (52), and the heat-conducting fins (52) penetrate through the vent holes (13).
9. The electrical cabinet facilitating heat dissipation of claim 6, wherein: the ventilation box (6) is arranged on one side of the cabinet body (1), and the outer pipe is arranged on the other side of the cabinet body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221453645.7U CN217445728U (en) | 2022-06-10 | 2022-06-10 | Regulator cubicle convenient to heat dissipation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221453645.7U CN217445728U (en) | 2022-06-10 | 2022-06-10 | Regulator cubicle convenient to heat dissipation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217445728U true CN217445728U (en) | 2022-09-16 |
Family
ID=83223315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221453645.7U Expired - Fee Related CN217445728U (en) | 2022-06-10 | 2022-06-10 | Regulator cubicle convenient to heat dissipation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217445728U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116321927A (en) * | 2022-12-14 | 2023-06-23 | 靖江市启运空调设备有限公司 | Waterproof high temperature resistant combination formula air conditioner switch board |
-
2022
- 2022-06-10 CN CN202221453645.7U patent/CN217445728U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116321927A (en) * | 2022-12-14 | 2023-06-23 | 靖江市启运空调设备有限公司 | Waterproof high temperature resistant combination formula air conditioner switch board |
| CN116321927B (en) * | 2022-12-14 | 2023-10-03 | 靖江市启运空调设备有限公司 | Waterproof high temperature resistant combination formula air conditioner 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 |
Granted publication date: 20220916 |