CN209201668U - A kind of heliogreenhouse north wall - Google Patents
A kind of heliogreenhouse north wall Download PDFInfo
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- CN209201668U CN209201668U CN201822152127.1U CN201822152127U CN209201668U CN 209201668 U CN209201668 U CN 209201668U CN 201822152127 U CN201822152127 U CN 201822152127U CN 209201668 U CN209201668 U CN 209201668U
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- 230000009466 transformation Effects 0.000 claims abstract description 123
- 239000012071 phase Substances 0.000 claims abstract description 96
- 238000009423 ventilation Methods 0.000 claims abstract description 42
- 239000008385 outer phase Substances 0.000 claims abstract description 36
- 238000005192 partition Methods 0.000 claims abstract description 29
- 239000011449 brick Substances 0.000 claims abstract description 23
- 239000004567 concrete Substances 0.000 claims description 9
- 239000012782 phase change material Substances 0.000 claims description 7
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 230000000694 effects Effects 0.000 description 9
- 238000005338 heat storage Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 239000011796 hollow space material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000011232 storage material Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 238000006467 substitution reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009414 blockwork Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002362 mulch Substances 0.000 description 1
- 230000000422 nocturnal effect Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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Abstract
The utility model discloses a kind of heliogreenhouse north walls, the outermost layer of wall is arranged in insulating layer, brick layer is arranged between insulating layer and phase transformation building block layer, phase transformation building block layer includes: outer phase transformation building block layer, phase transformation building block partition wall, interior phase transformation building block layer and top insulating layer, there are an empty spaces between outer phase transformation building block layer and interior phase transformation building block layer, phase transformation building block partition wall is arranged in empty space, and the empty space is divided into multiple gas chambers by phase transformation building block partition wall；Top insulating layer is located at outer phase transformation building block layer and interior phase transformation building block layer top, and each gas chamber upper end is provided with ventilation opening, and lower end is provided with lower ventilation opening.Temperature indoor air temperature on daytime is higher than the air themperature in wall empty space, and warm room air enters each gas chamber through upper ventilation opening, and releasing thermal temperature reduces, then enters greenhouse through lower ventilation opening and obtain heat.Night temperature room air flows into each gas chamber through lower ventilation opening, and heat is obtained from phase transformation building block, and temperature rises, and flows into greenhouse through upper ventilation opening.
Description
Technical field
The utility model relates to greenhouse heat-insulating technical fields, and in particular to a kind of heliogreenhouse north wall.
Background technique
Heliogreenhouse, also known as brooder, heliogreenhouse utilize its north wall accumulation of heat on daytime night heat release, store with excellent heat preservation
Hot property is widely used in the northern area of China.The thermal isolation and heat storage performance of solar greenhouse wall body directly affects greenhouse indoor air temperature
With the growth of crop.Currently, heliogreenhouse north wall mainly uses soil property wall or combined wall, but soil property wall relies on soil
Sensible heat accumulation of heat, heat storage capacity is weaker, so general thickness of wall body is thicker to guarantee warm indoor thermal environment, some cob wall bottoms are thick
Degree is even up to 4.5~7m, does not only result in that heliogreenhouse land utilization ratio is low, also there is certain destruction to arable soil layer.
And existing combined wall is the heterogeneous multi-layer material wall knot using the construction materials such as thermal insulation material and brick, concrete construction
Structure, thermal insulation property is preferable, greatly reduces compared to soil property thickness of wall body, but heat storage performance is lower.
Phase-changing energy storage material (Phase Change Material, PCM) stores energy using latent heat of phase change, has energy storage
Amount is big, energy storage efficiency is high, phase-changing energy-storing when temperature change it is small the advantages that.Phase-changing energy storage material is applied in greenhouse north wall, benefit
With latent heat of phase change accumulation of heat, daytime latent heat of phase change accumulation of heat can be carried out to the sun, discharges heat to greenhouse when nocturnal temperature is low, not only may be used
Wall heat storage capacity is greatly improved, promotes heliogreenhouse the efficiency of solar energy utilization, while thickness of wall body can be reduced, is heliogreenhouse
The light effective way for simplifying design.
But the heating conductions such as common phase change heat storage material such as paraffin, fatty acid are poor, are directly used in heliogreenhouse north
When in wall, the PCM wallboard bulk layer thickness only 20cm or so for storing exothermic effects can be effectively played, and since wall internal temperature is lower,
Phase-change material inside wall cannot be undergone phase transition, so that the heat storage efficiency of phase-transition heat-storage greenhouse north wall is lower, phase-change material
Utilization rate is poor.
Utility model content
In order to solve the above-mentioned technical problem the utility model, proposes following technical solution:
In a first aspect, the utility model embodiment provides a kind of heliogreenhouse north wall, comprising: insulating layer, brick layer and phase
Become building block layer, the outermost layer of wall is arranged in the insulating layer, and the brick layer is arranged in the insulating layer and the phase transformation building block
Between layer, and the first metope of the medial surface of the insulating layer and the brick layer is in close contact, the second metope of the brick layer with
The phase transformation building block layer is in close contact；The phase transformation building block layer includes: outer phase transformation building block layer, phase transformation building block partition wall, interior phase transformation block
Block layer and top insulating layer, the outer phase transformation building block layer are located at greenhouse medial surface, the interior phase transformation building block layer and the brick layer
Second metope is in close contact, and there are an empty space, the phases between the outer phase transformation building block layer and the interior phase transformation building block layer
Become building block partition wall be arranged in the empty space, and the phase transformation building block partition wall respectively with the outer phase transformation building block layer with it is described
Interior phase transformation building block layer is connected, and the empty space is divided into multiple gas chambers by the phase transformation building block partition wall；The top heat preservation
Layer is located at the outer phase transformation building block layer and the interior phase transformation building block layer top, and with the outer phase transformation building block layer and the interior phase transformation
The upper end of building block layer fits closely, and each gas chamber upper end is provided with ventilation opening, and lower end is provided with lower ventilation opening, it is described on
Ventilation opening and lower ventilation opening are used to penetrate through heliogreenhouse and the gas chamber.
Using above-mentioned implementation, Greenhouse day is influenced by solar radiation, and warm indoor air temperature is higher than space in wall
Every interior air themperature, since atmospheric density has differences, free convection is generated under the effect of gravity, warm room air is through upper logical
Air port enters each gas chamber, releases heat, and temperature reduces, then enters greenhouse through lower ventilation opening and obtain heat.Night, warm Interior Space
Temperature degree reduces, and when the air themperature in empty space is higher than warm indoor air temperature, warm room air is flowed into through lower ventilation opening
Each gas chamber obtains heat by heat transfer free convection effect from phase transformation building block, and temperature rises, and flows into greenhouse through upper ventilation opening
It is interior.
With reference to first aspect, in a first possible implementation of that first aspect, the face layer of the top insulating layer
Also set up a concrete cover, the face layer close contact of the concrete cover and the top insulating layer.Concrete cover
Cooperation top insulating layer can effectively prevent the heat loss in empty space.
With reference to first aspect, in a second possible implementation of that first aspect, the phase transformation building block partition wall spacing is 1
~1.5 meters.
With reference to first aspect, in first aspect in the third possible implementation, the outer phase transformation building block layer with it is described
The empty space width that interior phase transformation building block layer is formed is 0.2~0.3 meter.
The third possible implementation with reference to first aspect, in the 4th kind of possible implementation of first aspect, institute
Stating ventilation opening and the lower ventilation opening distance is 2~2.5 meters.
4th kind of possible implementation with reference to first aspect, in the 5th kind of possible implementation of first aspect, institute
State empty space surrounding metope setting waterproof mortar course, the waterproof mortar course respectively with the outer phase transformation building block layer with it is described interior
The intimate surface contact of phase transformation building block layer.
5th kind of possible implementation with reference to first aspect, in the 6th kind of possible implementation of first aspect, institute
It states empty space bottom and is additionally provided with gutter.Gutter is used to exclude to be precipitated since air exothermic temperature reduces solidifying daytime
Water.
It with reference to first aspect or the first to six kind of first aspect any possible implementation, can at the 7th kind of first aspect
In the implementation of energy, the phase transformation building block partition wall is uniformly arranged in the empty space.
7th kind of possible implementation with reference to first aspect, in the 8th kind of possible implementation of first aspect, institute
Outer phase transformation building block layer, the interior phase transformation building block layer is stated mutually to mix for phase-change material with cement with the building block in the phase transformation building block partition wall
The building block of conjunction.
Detailed description of the invention
Fig. 1 is a kind of longitudinal profile schematic diagram of heliogreenhouse north wall provided by the embodiment of the utility model；
Fig. 2 is a kind of horizontal section top view of heliogreenhouse north wall provided by the embodiment of the utility model；
In Fig. 1-2, symbol is expressed as: 1- insulating layer, 2- brick layer, the outer phase transformation building block layer of 3-, 4- phase transformation building block partition wall, in 5-
Phase transformation building block layer, the top 6- insulating layer, 7- empty space, 8- gas chamber, the upper ventilation opening of 9-, ventilation opening under 10-, 11- coagulation earth mulch
Plate.
Specific embodiment
This programme is illustrated with specific embodiment with reference to the accompanying drawing.
Fig. 1 is a kind of longitudinal profile schematic diagram for heliogreenhouse north wall that utility model embodiment provides, and Fig. 2 is that this is practical
A kind of horizontal section top view for heliogreenhouse north wall that new embodiment provides.Referring to Fig. 1-Fig. 2, the utility model embodiment
The heliogreenhouse north wall of offer, comprising: the outermost of wall is arranged in insulating layer 1, brick layer 2 and phase transformation building block layer, the insulating layer 1
Layer, the brick layer 2 are arranged between the insulating layer 1 and the phase transformation building block layer, and the medial surface of the insulating layer 1 with it is described
First metope of brick layer 2 is in close contact, and the second metope of the brick layer 2 and the phase transformation building block layer are in close contact.
The phase transformation building block layer includes: that outer phase transformation building block layer 3, phase transformation building block partition wall 4, interior phase transformation building block layer 5 and top are protected
Warm layer 6.Building block in the outer phase transformation building block layer 3, the interior phase transformation building block layer 5 and the phase transformation building block partition wall 4 is phase transformation material
Expect the building block mixed with cement, the phase-change material mixing proportion in the building block is between 40%-60%.
The outer phase transformation building block layer 3 is located at greenhouse medial surface, the second wall of interior the phase transformation building block layer 5 and the brick layer 2
Face is in close contact, and there are an empty space 7, the outer phase transformations between the outer phase transformation building block layer 3 and the interior phase transformation building block layer 5
7 width of the empty space that building block layer 3 and the interior phase transformation building block layer 5 are formed is 0.2~0.3 meter.The empty space 7 four
All metopes is arranged waterproof mortar course, the waterproof mortar course respectively with the outer phase transformation building block layer 3 and the interior phase transformation building block layer 5
Intimate surface contact.7 bottom of empty space is additionally provided with gutter, to exclude daytime since air exothermic temperature reduces
The condensate of precipitation.
The phase transformation building block partition wall 4 is arranged in the empty space 7, and the phase transformation building block partition wall 4 is uniformly arranged on institute
It states in empty space 7,4 spacing of phase transformation building block partition wall is 1~1.5 meter.The phase transformation building block partition wall 4 respectively with the foreign minister
Become building block layer 3 to be connected with the interior phase transformation building block layer 5, the empty space 7 is divided into multiple by the phase transformation building block partition wall 4
Gas chamber 8.
The top insulating layer 6 is located at the outer phase transformation building block layer 3 and interior 5 top of phase transformation building block layer, and with it is described
The upper end of outer phase transformation building block layer 3 and the interior phase transformation building block layer 5 fits closely, and each 8 upper end of gas chamber is provided with logical
Air port 9, lower end are provided with lower ventilation opening 10, and lower ventilation opening 10 and upper ventilation opening 9 are connected with hollow space, form air stream all
Road, with the lower ventilation opening 10 apart from being 2~2.5 meters, the upper ventilation opening 9 and lower ventilation opening 10 are used for the upper ventilation opening 9
Heliogreenhouse and the gas chamber 8 are penetrated through.
The face layer of the top insulating layer 6 also sets up a concrete cover 11, the concrete cover 11 with it is described on
The face layer of portion's insulating layer 6 is in close contact.Concrete cover 11 and top insulating layer 6 can effectively prevent heat loss.
Greenhouse day is influenced by solar radiation, and warm indoor air temperature is higher than the air themperature in wall empty space 7, by
It is had differences in atmospheric density, generates free convection under the effect of gravity, warm room air enters empty space through upper ventilation opening 9
7, heat is released, temperature reduces, then enters greenhouse through lower ventilation opening 10 and obtain heat.Night, warm indoor air temperature reduce, in
When air themperature of the space in 7 is higher than warm indoor air temperature, warm room air flows into empty space 7 through lower ventilation opening 10,
Heat is obtained from phase transformation building block by heat transfer free convection effect, temperature rises, and flows into greenhouse through upper ventilation opening 9.
Heliogreenhouse north wall wall body structure provided by the embodiment of the utility model increases compared with common heliogreenhouse north wall
The surface of wall area directly to exchange heat with the air of higher temperature in greenhouse, increases amount of stored heat, and can be improved
Wall internal temperature improves phase-change material utilization rate.Greenhouse north wall amount of stored heat not only can be improved additionally by heat exchange, may be used also
To reduce greenhouse air temperature on daytime, Crop transpirstion effect in greenhouse is reduced, warm indoor air humidity is advantageously reduced.Night is logical
Cross Effect of Nature Convection, phase transformation building block layer is by hollow space surface of wall and is directly facing the surface of wall of greenhouse side to greenhouse
Interior air heat release, heat exchange surface area increase, and can effectively improve greenhouse north wall night exothermal efficiency.Daytime, temperature room air entered phase
Hollow space can be such that the Water vapor condensation in air is precipitated by free convection heat release between becoming blockwork, daytime temperature room air
Temperature, which reduces, also to be reduced crop, ground transpiration and dissipates wet, this is all beneficial to reduce warm indoor air humidity, reduces disease in greenhouse
Occur.
As can be seen from the above embodiments, a kind of heliogreenhouse north wall provided in this embodiment, comprising: insulating layer 1,2 and of brick layer
The outermost layer of wall is arranged in phase transformation building block layer, the insulating layer 1, and the setting of brick layer 2 is in the insulating layer 1 and the phase transformation
Between building block layer, and the medial surface of the insulating layer 1 and the first metope of the brick layer 2 are in close contact, and the second of the brick layer 2
Metope and the phase transformation building block layer are in close contact；The phase transformation building block layer include: outer phase transformation building block layer 3, phase transformation building block partition wall 4,
Interior phase transformation building block layer 5 and top insulating layer 6, the outer phase transformation building block layer 3 are located at greenhouse medial surface, the interior phase transformation building block layer 3
It is in close contact with the second metope of the brick layer 5, there are one between the outer phase transformation building block layer 3 and the interior phase transformation building block layer 5
Empty space 7, the phase transformation building block partition wall 4 are arranged in the empty space 7, and the phase transformation building block partition wall 4 respectively with institute
It states outer phase transformation building block layer 3 to be connected with the interior phase transformation building block layer 5, the phase transformation building block partition wall 4 divides the empty space 7
For multiple gas chambers 8；The top insulating layer 6 is located at the outer phase transformation building block layer 3 and interior 5 top of phase transformation building block layer, and with
The upper end of the outer phase transformation building block layer 3 and the interior phase transformation building block layer 5 fits closely, and each 8 upper end of gas chamber is provided with
Upper ventilation opening 9, lower end are provided with lower ventilation opening 10, and the upper ventilation opening 9 and lower ventilation opening 10 are used for heliogreenhouse and the gas
Room 8 penetrates through.Greenhouse day is influenced by solar radiation, and warm indoor air temperature is higher than in wall empty space 7 air themperature, by
It is had differences in atmospheric density, generates free convection under the effect of gravity, warm room air enters each gas through upper ventilation opening 9
Room releases heat, and temperature reduces, then enters greenhouse through lower ventilation opening 10 and obtain heat.Night, warm indoor air temperature reduce,
When 7 air themperature is higher than warm indoor air temperature in empty space, warm room air flows into each gas chamber through lower ventilation opening 10,
Heat is obtained from phase transformation building block by heat transfer free convection effect, temperature rises, and flows into greenhouse through upper ventilation opening 9.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment for including a series of elements not only includes those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including institute
State in the process, method, article or equipment of element that there is also other identical elements.
Certainly, above description is also not limited to the example above, and technical characteristic of the utility model without description can lead to
It crosses or realizes that details are not described herein using the prior art；Above embodiments and attached drawing are merely to illustrate the technology of the utility model
Scheme is not limitations of the present invention, Tathagata substitution, the utility model only in conjunction with and referring to preferred embodiment into
Go detailed description, those skilled in the art should understand that, those skilled in the art are practical new at this
The variations, modifications, additions or substitutions made in the essential scope of type also should belong to this without departure from the objective of the utility model
The claims of utility model.
Claims (9)
1. a kind of heliogreenhouse north wall characterized by comprising insulating layer (1), brick layer (2) and phase transformation building block layer, the heat preservation
The outermost layer of wall is arranged in layer (1), and the brick layer (2) is arranged between the insulating layer (1) and the phase transformation building block layer, and
The medial surface of the insulating layer (1) and first metope of the brick layer (2) are in close contact, the second metope of the brick layer (2) with
The phase transformation building block layer is in close contact；
The phase transformation building block layer includes: outer phase transformation building block layer (3), phase transformation building block partition wall (4), interior phase transformation building block layer (5) and top
Insulating layer (6), the outer phase transformation building block layer (3) are located at greenhouse medial surface, the interior phase transformation building block layer (5) and the brick layer (2)
The second metope be in close contact, there are an empty spaces between the outer phase transformation building block layer (3) and the interior phase transformation building block layer (5)
(7), the phase transformation building block partition wall (4) setting is in the empty space (7), and the phase transformation building block partition wall (4) respectively with institute
It states outer phase transformation building block layer (3) to be connected with the interior phase transformation building block layer (5), the phase transformation building block partition wall (4) is by the middle space
Multiple gas chambers (8) are divided into every (7)；
The top insulating layer (6) is located at the outer phase transformation building block layer (3) and interior phase transformation building block layer (5) top, and with institute
The upper end for stating outer phase transformation building block layer (3) and the interior phase transformation building block layer (5) fits closely, each gas chamber (8) upper end
It is provided with ventilation opening (9), lower end is provided with lower ventilation opening (10), and the upper ventilation opening (9) and lower ventilation opening (10) are used for daylight
Greenhouse and the gas chamber (8) penetrate through.
2. heliogreenhouse north wall according to claim 1, which is characterized in that the face layer of the top insulating layer (6) is also
It is arranged a concrete cover (11), the face layer of the concrete cover (11) and the top insulating layer (6) is in close contact.
3. heliogreenhouse north wall according to claim 1, which is characterized in that phase transformation building block partition wall (4) spacing be 1~
1.5 rice.
4. heliogreenhouse north wall according to claim 1, which is characterized in that the outer phase transformation building block layer (3) with it is described interior
The empty space (7) width that phase transformation building block layer (5) is formed is 0.2~0.3 meter.
5. heliogreenhouse north wall according to claim 4, which is characterized in that the upper ventilation opening (9) and the lower ventilation
Mouth (10) distance is 2~2.5 meters.
6. heliogreenhouse north wall according to claim 5, which is characterized in that empty space (7) the surrounding metope setting
Waterproof mortar course, the waterproof mortar course surface with the outer phase transformation building block layer (3) and the interior phase transformation building block layer (5) respectively
It is in close contact.
7. heliogreenhouse north wall according to claim 6, which is characterized in that empty space (7) bottom is additionally provided with
Gutter.
8. heliogreenhouse north wall according to claim 1-7, which is characterized in that the phase transformation building block partition wall (4)
It is uniformly arranged in the empty space (7).
9. heliogreenhouse north wall according to claim 8, which is characterized in that the outer phase transformation building block layer (3), the interior phase
The building block that the building block become in building block layer (5) and the phase transformation building block partition wall (4) mixes into phase-change material and cement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822152127.1U CN209201668U (en) | 2018-12-21 | 2018-12-21 | A kind of heliogreenhouse north wall |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822152127.1U CN209201668U (en) | 2018-12-21 | 2018-12-21 | A kind of heliogreenhouse north wall |
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| CN209201668U true CN209201668U (en) | 2019-08-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109328768A (en) * | 2018-12-21 | 2019-02-15 | 山东农业大学 | A kind of heliogreenhouse north wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109328768A (en) * | 2018-12-21 | 2019-02-15 | 山东农业大学 | A kind of heliogreenhouse north wall |
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Granted publication date: 20190806 Termination date: 20191221 |