CN209484766U - It is placed in the double-skin roof indirect evaporating-cooling radiation cooling system of flat roof or inclined roof - Google Patents
It is placed in the double-skin roof indirect evaporating-cooling radiation cooling system of flat roof or inclined roof Download PDFInfo
- Publication number
- CN209484766U CN209484766U CN201822032905.3U CN201822032905U CN209484766U CN 209484766 U CN209484766 U CN 209484766U CN 201822032905 U CN201822032905 U CN 201822032905U CN 209484766 U CN209484766 U CN 209484766U
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- China
- Prior art keywords
- cabinet
- fin type
- plate fin
- indirect evaporative
- roof
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- Expired - Fee Related
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- 238000001816 cooling Methods 0.000 title claims abstract description 65
- 230000005855 radiation Effects 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 238000004321 preservation Methods 0.000 claims abstract description 27
- 238000001704 evaporation Methods 0.000 claims abstract description 11
- 230000008020 evaporation Effects 0.000 claims abstract description 11
- 239000007921 spray Substances 0.000 claims abstract description 11
- 239000012212 insulator Substances 0.000 claims description 20
- 238000010079 rubber tapping Methods 0.000 claims description 5
- 238000010792 warming Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Abstract
The utility model provides a kind of double-skin roof indirect evaporating-cooling radiation cooling system for being placed in flat roof or inclined roof: including keeping the temperature cabinet, plate fin type indirect evaporative cooler, reservoir and cold-storage radiating surface, nozzle comb is provided at the top of Warming machine box cavity, Warming machine box cavity is connect with air supply pipeline and air return pipeline respectively, plate fin type indirect evaporative cooler is located in Warming machine box cavity, plate fin type indirect evaporative cooler head end and positioned at heat preservation cabinet on the outside of pressure fan between connect, plate fin type indirect evaporative cooler tail end and positioned at heat preservation cabinet on the outside of air supply pipeline between connect, Warming machine box cavity bottom is as reservoir, it is connected between reservoir and nozzle comb by spray pipeline, it is connected between reservoir and cold-storage radiating surface by circulating chilled water pipeline.The utility model can synthetically utilize evaporation cooling technique and radiation air-conditioner technology, and cold-storage while room temperature is effectively reduced reduces the energy consumption of building, improves the thermal comfort of human body.
Description
Technical field
The utility model relates between building energy saving field more particularly to a kind of double-skin roof for being placed in flat roof or inclined roof
Connect the cooling radiation cooling system of evaporation.
Background technique
With the development of China's economy and society, heating, air conditioning energy consumption increase year by year, are dropped using renewable energy to room
Mild heating is to solve one of energy consumption and the effective way of environmental problem.
Double-skin roof is the effective heat-insulating method for reducing summer solar radiation heat and entering the room.At present major measure be
The methods of aerial partition, reservoir or spray is arranged in roof, by reducing from roof to indoor heat transfer to reduce outdoor environment
On indoor influence.Although the summer that these methods can effectively reduce roof obtains heat, can not achieve empty in cooling chamber
Gas achievees the purpose that cooling.
Evaporation cooling technique is the method for solving energy consumption and environmental problem using renewable energy.It is done using outdoor
Air energy carries out cooling heat room air by the evaporation endothermic principle of water；Radiation air-conditioner technology eliminates traditional sky
Adjusting system end equipment, it is with higher using radiation theory to rooms and cooling by pipe built-in in building enclosure
Comfort.The utility model combines above two technology, is placed between double-skin roof, not only energy conservation but also reduce environmental pollution.
Therefore, it is necessary to improve to the prior art.
Utility model content
The technical problem to be solved by the present invention is to provide the double-deck rooms that one kind is efficiently placed in flat roof or inclined roof
Push up indirect evaporating-cooling radiation cooling system.
In order to solve the above technical problems, the utility model provides a kind of double-skin roof indirect evaporating-cooling for being placed in flat roof
Radiation cooling system: including heat preservation cabinet, plate fin type indirect evaporative cooler, reservoir and cold-storage radiating surface；
Nozzle comb is provided at the top of the Warming machine box cavity；The Warming machine box cavity respectively with air supply pipeline and return
Air pipe line connection；
The plate fin type indirect evaporative cooler is located in Warming machine box cavity；
The plate fin type indirect evaporative cooler head end and positioned at heat preservation cabinet on the outside of pressure fan between connect；The plate
Wing formula indirect evaporation cooler tail end and positioned at heat preservation cabinet on the outside of air supply pipeline between connect；
Warming machine box cavity bottom is as reservoir；Connected between the reservoir and nozzle comb by spray pipeline
It connects；It is connected between the reservoir and cold-storage radiating surface by circulating chilled water pipeline.
As to the utility model double-skin roof indirect evaporating-cooling radiation cooling system, it is characterised in that:
The reservoir is connect with water supply pipe, overflow pipe and tapping pipe respectively, and ball-cock assembly and spilling water are provided in reservoir
Device, ball-cock assembly are used cooperatively with water supply pipe, and overflow device is used cooperatively with overflow pipe.
The utility model also provides a kind of double-skin roof indirect evaporating-cooling radiation cooling system for being placed in inclined roof: including
Keep the temperature cabinet, plate fin type indirect evaporative cooler, water jacket thermal insulator, cold-storage radiating surface and water dish；
Nozzle comb is provided at the top of the Warming machine box cavity；The Warming machine box cavity respectively with air supply pipeline and return
Air pipe line connection；
The plate fin type indirect evaporative cooler is located in Warming machine box cavity；
The plate fin type indirect evaporative cooler head end and positioned at heat preservation cabinet on the outside of pressure fan between connect；The plate
Wing formula indirect evaporation cooler tail end and positioned at heat preservation cabinet on the outside of air supply pipeline between connect；
The water dish is located at Warming machine box cavity bottom；Connected between the water dish and water jacket thermal insulator by connecting tube
It connects；It is connected between the water jacket thermal insulator and nozzle comb by spray pipeline；Lead between the water jacket thermal insulator and cold-storage radiating surface
Water circulation pipe connection is subcooled.
As the double-skin roof indirect evaporating-cooling radiation cooling system for being placed in inclined roof to the utility model:
The water jacket thermal insulator connect with water supply pipe, overflow pipe and tapping pipe respectively, be provided in water jacket thermal insulator ball-cock assembly and
Overflow device, ball-cock assembly are used cooperatively with water supply pipe, and overflow device is used cooperatively with overflow pipe；
Gas vent is set at the top of the water jacket thermal insulator.
As the double-skin roof indirect evaporating-cooling radiation cooling system for being placed in flat roof to the utility model or it is placed in slope
The improvement of the double-skin roof indirect evaporating-cooling radiation cooling system on roof:
The Warming machine box cavity is from left to right successively separated into first part's cabinet, second part cabinet and Part III
Cabinet；First part's cabinet, second part cabinet and Part III chassis bottom are interconnected as reservoir or set
It is equipped with water dish；First part's cabinet, second part cabinet and Part III enclosure top are provided with nozzle comb；
The upper surface of first part's cabinet, second part cabinet and Part III cabinet passes sequentially through fan housing and row
It is connect after air pipe line with exhaust blower；
The plate fin type indirect evaporative cooler is cold including from left to right sequentially connected first order plate fin type indirect evaporative
But device, second level plate fin type indirect evaporative cooler and third level plate fin type indirect evaporative cooler；The first order plate-fin
Indirect evaporation cooler, second level plate fin type indirect evaporative cooler and third level plate fin type indirect evaporative cooler are set gradually
In first part's cabinet, second part cabinet and Part III cabinet.
As the double-skin roof indirect evaporating-cooling radiation cooling system for being placed in flat roof to the utility model or it is placed in slope
The further improvement of the double-skin roof indirect evaporating-cooling radiation cooling system on roof:
The pressure fan air outlet is divided into two-way, wherein connecting all the way with first order plate fin type indirect evaporative cooler head end
It connects, another way is connected to first part's cabinet；
First order plate fin type indirect evaporative cooler tail end is divided into two-way, wherein all the way with second level plate fin type indirect evaporative
The connection of cooler head end, another way are connected to second part cabinet；
Second level plate fin type indirect evaporative cooler tail end is divided into two-way, wherein all the way with third level plate fin type indirect evaporative
The connection of cooler head end, another way are connected to Part III cabinet；
Third level plate fin type indirect evaporative cooler tail end is connect with air supply pipeline head end, and air supply pipeline tail end passes through air-supply
Mouth is connected to interior.
As the double-skin roof indirect evaporating-cooling radiation cooling system for being placed in flat roof to the utility model or it is placed in slope
The improvement of the double-skin roof indirect evaporating-cooling radiation cooling system on roof:
The spray pipeline and cool water circulating pipe road are equipped with water pump, and water pump inlet and outlet side is respectively provided with shut-off valve.
The utility model is placed in the technology of the double-skin roof indirect evaporating-cooling radiation cooling system of flat roof or inclined roof
Advantage are as follows:
The utility model can synthetically utilize evaporation cooling technique and radiation air-conditioner technology, and room temperature is being effectively reduced
Cold-storage simultaneously, reduces the energy consumption of building, improves the thermal comfort of human body.
Detailed description of the invention
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.
Fig. 1 is the indirect evaporating-cooling radiation cooling system schematic that the utility model is placed in the double-deck flat roof；
Fig. 2 is the indirect evaporating-cooling radiation cooling system schematic that the utility model is placed in the double-deck inclined roof；
Fig. 3 is the overlooking structure diagram of Fig. 1.
Specific embodiment
The utility model is described further combined with specific embodiments below, but the protection scope of the utility model is simultaneously
It is not limited only to this.
Embodiment 1 is a kind of double-skin roof indirect evaporating-cooling radiation cooling system for being placed in the double-deck flat roof, such as Fig. 1 institute
Show, including heat preservation cabinet 13, plate fin type indirect evaporative cooler, reservoir 1-25 and cold-storage radiating surface 31:
Heat preservation cabinet 13 is located between the upper surface 16 of double-skin roof and the lower surface 17 of double-skin roof, cold-storage radiating surface 31
In the interior 32 immediately below the lower surface of double-skin roof 17.
Plate fin type indirect evaporative cooler includes from left to right sequentially connected first order plate fin type indirect evaporative cooler
5, second level plate fin type indirect evaporative cooler 6 and third level plate fin type indirect evaporative cooler 7.
Heat preservation 13 inner cavity of cabinet is from left to right separated into first part cabinet 13-1, second part cabinet 13-2 and third portion
Extension set case 13-3, first part cabinet 13-1, second part cabinet 13-2 and the Part III bottom cabinet 13-3, which are interconnected, to be made
For reservoir 1-25；It is provided at the top of first part cabinet 13-1, second part cabinet 13-2 and Part III cabinet 13-3
Nozzle comb 11.
Nozzle comb 11 passes through the spray pipeline 12 for being located at 13 outside of heat preservation cabinet and (heat preservation 13 bottom of cabinet reservoir 1-25
Portion) connection.
First part cabinet 13-1, second part cabinet 13-2 and the upper surface Part III cabinet 13-3 pass through fan housing 4,
Exhaust pipeline 14 is connect with exhaust blower 15, and exhaust blower 15 is located at 16 outside of upper surface of double-skin roof.
First order plate fin type indirect evaporative cooler 5, second level plate fin type indirect evaporative cooler 6 and third level plate-fin
Indirect evaporation cooler 7 is successively set on first part cabinet 13-1, second part cabinet 13-2 and Part III cabinet 13-3
In.
3 head end of pressure fan (air inlet) is provided with strainer 2, and 3 tail end of pressure fan (at air outlet) is divided into two-way, wherein one
Road is connect with 5 head end of first order plate fin type indirect evaporative cooler, another way be provided with butterfly valve 10 and with first part's cabinet
13-1 connection.
5 tail end of first order plate fin type indirect evaporative cooler is divided into two-way, wherein steaming indirectly with second level plate-fin all the way
The connection of 6 head end of cooler is sent out, another way is provided with butterfly valve 10 and is connected to second part cabinet 13-2.
Plate fin type indirect evaporative cooler 6 tail end in the second level is divided into two-way, wherein steaming indirectly with third level plate-fin all the way
The connection of 7 head end of cooler is sent out, another way is provided with butterfly valve 10 and is connected to Part III cabinet 13-3.
7 tail end of third level plate fin type indirect evaporative cooler is connect with 18 head end of air supply pipeline, and 18 tail end of air supply pipeline is logical
Air outlet 20 is crossed to be connected to interior 32.
Part III cabinet 13-3 is connect with air return pipeline 19, and 19 tail end of air return pipeline is connected by return air inlet 21 and interior 32
It is logical.
Plate fin type indirect evaporative cooler head and the tail both ends (5 head end of first order plate fin type indirect evaporative cooler and the third level
6 tail end of plate fin type indirect evaporative cooler) it is provided with the duct set 37 of built-in flow deflector, first order plate fin type indirect evaporative is cold
But it device 5 and is connected between the pressure fan 3 in heat preservation cabinet 13 outside by the duct set 37 of built-in flow deflector；Third step
Wing formula indirect evaporation cooler 7 and the duct set for passing through built-in flow deflector between the air supply pipeline 18 in 13 outside of heat preservation cabinet
37 connections.
Reservoir 1-25 is connect with cold-storage radiating surface 31 by circulating chilled water pipeline 22, is provided on circulating chilled water pipeline 22
Shut-off valve 29 and water pump 30, to ensure 22 normal operation of circulating chilled water pipeline, the inlet and outlet side of water pump 30 is mounted on one and cuts
Only valve 29 (shut-off valve and water pump are similarly equipped on above-mentioned spray pipeline 12).Recirculated water in reservoir 1-25 is as cold-storage
The cold source of radiating surface 31 makes it through the mode of radiation heat transfer as interior 32 and provides cooling capacity to undertake indoor sensible heat load.
In order to ensure in reservoir 1-25 that water is sufficient and reliable for operation, reservoir 1-25 respectively with water supply pipe 23, spilling water
Pipe 26 and tapping pipe 28 connect, and are additionally provided with ball-cock assembly 24 and overflow device 27 in reservoir 1-25, wherein ball-cock assembly 24 and benefit
The connection of water pipe 23 is used cooperatively, and overflow device 27 connect with overflow pipe 26 and is used cooperatively.
Embodiment 2 is a kind of indirect evaporating-cooling radiation cooling system for being placed in the double-deck inclined roof, as shown in Fig. 2, its base
Present principles and working principle are same as Example 1, and existing difference essentially consists in the reservoir 1-25 eliminated in embodiment 1,
Increase water dish 35 and water jacket thermal insulator 2-25.
The double-deck inclined roof is provided with ceiling 33, water jacket thermal insulator 2-25 between the lower surface of double-skin roof 17 and interior 32
It is arranged between the lower surface 17 of double-skin roof and ceiling 33.
The bottom of first part cabinet 13-1, second part cabinet 13-2 and Part III cabinet 13-3 is arranged in water dish 35
Portion, to accept the water sprayed, water dish 35 is connect by connecting tube 34 with water jacket thermal insulator's 2-25 import, water jacket thermal insulator 2-
25 outlets are connect by spray pipeline 12 with nozzle comb 11, in addition, water jacket thermal insulator 2-25 is by circulating chilled water pipeline 22 and stores
Cold emission face 31 connects.It is reliable for operation for safeguards system, gas vent 36 is also set up at the top of water jacket thermal insulator 2-25.
For embodiment 1 and embodiment 2 handle air using three-level plate fin type indirect evaporative cooler, to the utility model
Principle illustrated, using the plate fin type indirect evaporative cooler of the fourth stage, level V and more stages to air
It is similar to the aforementioned embodiment to be treated journey, and in the ideal case, doing so can make fresh air be reduced to dew-point temperature
Below.
Finally, it should also be noted that it is listed above be only the utility model several specific embodiments.Obviously,
The utility model is not limited to above embodiments, and acceptable there are many deformations.Those skilled in the art can be practical new from this
All deformations that type disclosure is directly exported or associated, are considered as the protection scope of the utility model.
Claims (7)
1. being placed in the double-skin roof indirect evaporating-cooling radiation cooling system on flat roof, it is characterised in that: including keeping the temperature cabinet
(13), plate fin type indirect evaporative cooler, reservoir (1-25) and cold-storage radiating surface (31)；
Heat preservation cabinet (13) inner cavity top is provided with nozzle comb (11)；Heat preservation cabinet (13) inner cavity respectively with air-supply
Pipeline (18) and air return pipeline (19) connection；
The plate fin type indirect evaporative cooler is located in heat preservation cabinet (13) inner cavity；
It is connected between the plate fin type indirect evaporative cooler head end and the pressure fan (3) being located on the outside of heat preservation cabinet (13)；Institute
It states and is connected between plate fin type indirect evaporative cooler tail end and the air supply pipeline (18) being located on the outside of heat preservation cabinet (13)；
Heat preservation cabinet (13) intracavity bottom is as reservoir (1-25)；The reservoir (1-25) and nozzle comb (11) it
Between by spray pipeline (12) connect；Pass through circulating chilled water pipeline between the reservoir (1-25) and cold-storage radiating surface (31)
(22) it connects.
2. the double-skin roof indirect evaporating-cooling radiation cooling system according to claim 1 for being placed in flat roof, feature
It is:
The reservoir (1-25) connect with water supply pipe (23), overflow pipe (26) and tapping pipe (28) respectively, reservoir (1-25)
In be provided with ball-cock assembly (24) and overflow device (27), ball-cock assembly (24) is used cooperatively with water supply pipe (23), overflow device (27) and overflow
Water pipe (26) is used cooperatively.
3. being placed in the double-skin roof indirect evaporating-cooling radiation cooling system of inclined roof, it is characterised in that: including keeping the temperature cabinet
(13), plate fin type indirect evaporative cooler, water jacket thermal insulator (2-25), cold-storage radiating surface (31) and water dish (35)；
Heat preservation cabinet (13) inner cavity top is provided with nozzle comb (11)；Heat preservation cabinet (13) inner cavity respectively with air-supply
Pipeline (18) and air return pipeline (19) connection；
The plate fin type indirect evaporative cooler is located in heat preservation cabinet (13) inner cavity；
It is connected between the plate fin type indirect evaporative cooler head end and the pressure fan (3) being located on the outside of heat preservation cabinet (13)；Institute
It states and is connected between plate fin type indirect evaporative cooler tail end and the air supply pipeline (18) being located on the outside of heat preservation cabinet (13)；
The water dish (35) is located at heat preservation cabinet (13) intracavity bottom；Between the water dish (35) and water jacket thermal insulator (2-25)
It is connected by connecting tube (34)；It is connect between the water jacket thermal insulator (2-25) and nozzle comb (11) by spray pipeline (12)；
It is connect between the water jacket thermal insulator (2-25) and cold-storage radiating surface (31) by circulating chilled water pipeline (22).
4. the double-skin roof indirect evaporating-cooling radiation cooling system according to claim 3 for being placed in inclined roof, feature
It is:
The water jacket thermal insulator (2-25) connect with water supply pipe (23), overflow pipe (26) and tapping pipe (28) respectively, water jacket thermal insulator (2-
25) ball-cock assembly (24) and overflow device (27) are provided in, ball-cock assembly (24) is used cooperatively with water supply pipe (23), overflow device (27) with
Overflow pipe (26) is used cooperatively；
Gas vent (36) are set at the top of the water jacket thermal insulator (2-25).
5. the double-skin roof indirect evaporating-cooling radiation cooling system according to claim 2 for being placed in flat roof or right are wanted
The double-skin roof indirect evaporating-cooling radiation cooling system of inclined roof is placed in described in asking 4, it is characterised in that:
Heat preservation cabinet (13) inner cavity is from left to right successively separated into first part's cabinet (13-1), second part cabinet (13-
And Part III cabinet (13-3) 2)；First part's cabinet (13-1), second part cabinet (13-2) and Part III machine
The case bottom (13-3) is interconnected as reservoir (1-25) or is provided with water dish (35)；First part's cabinet (13-
1) nozzle comb (11), are provided at the top of second part cabinet (13-2) and Part III cabinet (13-3)；
The upper surface of first part's cabinet (13-1), second part cabinet (13-2) and Part III cabinet (13-3) according to
It is secondary to be connect afterwards with exhaust blower (15) by fan housing (4) and exhaust pipeline (14)；
The plate fin type indirect evaporative cooler includes from left to right sequentially connected first order plate fin type indirect evaporative cooler
(5), second level plate fin type indirect evaporative cooler (6) and third level plate fin type indirect evaporative cooler (7)；First step
Wing formula indirect evaporation cooler (5), second level plate fin type indirect evaporative cooler (6) and third level plate fin type indirect evaporative are cooling
Device (7) is successively set in first part's cabinet (13-1), second part cabinet (13-2) and Part III cabinet (13-3).
6. double-skin roof indirect evaporating-cooling radiation cooling system according to claim 5, it is characterised in that:
Pressure fan (3) air outlet is divided into two-way, wherein connecting all the way with first order plate fin type indirect evaporative cooler (5) head end
It connects, another way is connected to first part cabinet (13-1)；
First order plate fin type indirect evaporative cooler (5) tail end is divided into two-way, wherein all the way with second level plate fin type indirect evaporative
The connection of cooler (6) head end, another way are connected to second part cabinet (13-2)；
Second level plate fin type indirect evaporative cooler (6) tail end is divided into two-way, wherein all the way with third level plate fin type indirect evaporative
The connection of cooler (7) head end, another way are connected to Part III cabinet (13-3)；
Third level plate fin type indirect evaporative cooler (7) tail end is connect with air supply pipeline (18) head end, air supply pipeline (18) tail end
It is connected to by air outlet (20) with indoor (32).
7. double-skin roof indirect evaporating-cooling radiation cooling system according to claim 6, it is characterised in that:
It is equipped with water pump (30) on the spray pipeline (12) and circulating chilled water pipeline (22), water pump (30) inlet and outlet side is respectively provided with
Shut-off valve (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822032905.3U CN209484766U (en) | 2018-12-05 | 2018-12-05 | It is placed in the double-skin roof indirect evaporating-cooling radiation cooling system of flat roof or inclined roof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822032905.3U CN209484766U (en) | 2018-12-05 | 2018-12-05 | It is placed in the double-skin roof indirect evaporating-cooling radiation cooling system of flat roof or inclined roof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209484766U true CN209484766U (en) | 2019-10-11 |
Family
ID=68117992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822032905.3U Expired - Fee Related CN209484766U (en) | 2018-12-05 | 2018-12-05 | It is placed in the double-skin roof indirect evaporating-cooling radiation cooling system of flat roof or inclined roof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209484766U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762667A (en) * | 2019-10-29 | 2020-02-07 | 浙江理工大学 | Evaporative cooling self-cooling radiation cooling room system and method |
-
2018
- 2018-12-05 CN CN201822032905.3U patent/CN209484766U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762667A (en) * | 2019-10-29 | 2020-02-07 | 浙江理工大学 | Evaporative cooling self-cooling radiation cooling room system and method |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20191011 |